Avoid false positive/negative test results from line directive interference.NFC.
Avoid false positive/negative test results from line directive interference.NFC.

http://reviews.llvm.org/D10443
Patch by Geoff Berry.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@240801 91177308-0d34-0410-b5e6-96231b3b80d8

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