net/handshake: hand off the pinned file reference to accept_doit

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/handshake/handshake-test.c",
                        "net/handshake/netlink.c",
                        "net/handshake/request.c"
                    ],
                    "versions": [
                        {
                            "version": "3b3009ea8abb713b022d94fba95ec270cf6e7eae",
                            "lessThan": "b869e3e4ce1996df23b3efdbbe9a64c4ab81d745",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3b3009ea8abb713b022d94fba95ec270cf6e7eae",
                            "lessThan": "2f28dbb30b88eafab8d49aaec94710b4e12dea8e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3b3009ea8abb713b022d94fba95ec270cf6e7eae",
                            "lessThan": "68eba6519cbd6359fb554a9720f3a3b6b2eba23f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3b3009ea8abb713b022d94fba95ec270cf6e7eae",
                            "lessThan": "c06876d4fac38f35820946ee3b1be7d7da799cd4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3b3009ea8abb713b022d94fba95ec270cf6e7eae",
                            "lessThan": "f4251190e58b209999c1ba9e6d2976136a1be055",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/handshake/handshake-test.c",
                        "net/handshake/netlink.c",
                        "net/handshake/request.c"
                    ],
                    "versions": [
                        {
                            "version": "6.4",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.4",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.44",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.12",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }