Simplify assert-neutral matching in test case.
Simplify assert-neutral matching in test case.

Originally committed in r188651, improved/fixed to be assert-neutral by
Takumi in r188661.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@188686 91177308-0d34-0410-b5e6-96231b3b80d8

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