Fix an algorithmic bug in LiveVariables pointed out by Zhongxing. If an initializer in a DeclStmt references the declared variable, that extends the liveness of that variable.
Fix an algorithmic bug in LiveVariables pointed out by Zhongxing.
If an initializer in a DeclStmt references the declared variable, that
extends the liveness of that variable.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@97624 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang