Refactor: Simplify boolean expressions in libclang
Refactor: Simplify boolean expressions in libclang

Simplify boolean expresions using true and false with clang-tidy.

Patch by Richard.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@232996 91177308-0d34-0410-b5e6-96231b3b80d8

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