sctp: fix stream->outcnt underflow on duplicate RECONF responses

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/net/sctp/structs.h",
                        "net/sctp/stream.c"
                    ],
                    "versions": [
                        {
                            "version": "11ae76e67a179f25ae8f772d62a7ddf717b1cdf3",
                            "lessThan": "041f7df5a929d3e7435dd8387e8ea17f2d412b7d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "11ae76e67a179f25ae8f772d62a7ddf717b1cdf3",
                            "lessThan": "59f61c39cb99ee1737bd742a20094fe5653389bb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "11ae76e67a179f25ae8f772d62a7ddf717b1cdf3",
                            "lessThan": "793519e343867ee9a3e84f6cac07f81f2aec7b5d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "11ae76e67a179f25ae8f772d62a7ddf717b1cdf3",
                            "lessThan": "092acd3c55a4077b00489064615d8d2d898daf91",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "11ae76e67a179f25ae8f772d62a7ddf717b1cdf3",
                            "lessThan": "2d867663c563e8009257b9edf9c8ec75d9bbf19a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "11ae76e67a179f25ae8f772d62a7ddf717b1cdf3",
                            "lessThan": "d02a5794c3deedcb8476d017fcee2b7aaedab2e1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "11ae76e67a179f25ae8f772d62a7ddf717b1cdf3",
                            "lessThan": "8320cbd81bc21a1ca6ebdf70ad610ebc5ef1bd68",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "11ae76e67a179f25ae8f772d62a7ddf717b1cdf3",
                            "lessThan": "3faf13aff243ca9f78d08b1a2956ef5a6fc77b6e",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/net/sctp/structs.h",
                        "net/sctp/stream.c"
                    ],
                    "versions": [
                        {
                            "version": "4.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.270",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.109",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.50",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }