wifi: rtw89: Correct data type for scan index to avoid infinite loop

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/realtek/rtw89/fw.c"
                    ],
                    "versions": [
                        {
                            "version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0",
                            "lessThan": "966fbed4b4463fbcb49c5becf3f86eae776861bd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0",
                            "lessThan": "05d46e30303275f21f13c951166d39c85df976d4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0",
                            "lessThan": "7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0",
                            "lessThan": "140fa699cfd0e18ab2f1497acd951fb3548610f5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0",
                            "lessThan": "08fdcb529df6df3562dd2b0035f88dd5be8b3c68",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/realtek/rtw89/fw.c"
                    ],
                    "versions": [
                        {
                            "version": "6.4",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.4",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }