Fix test to actually check the FixIt-applied code
Fix test to actually check the FixIt-applied code

r102230 added an 'echo' making this a no-op.

Also fixes FAIL on native Windows with no shell/GnuWin32.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@193938 91177308-0d34-0410-b5e6-96231b3b80d8

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