[indexer] Fix a fallthrough bug in IndexRecordHasher
[indexer] Fix a fallthrough bug in IndexRecordHasher

apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang