clang/test/PCH/missing-file.cpp: Try to suppress accidental false on Windows.
clang/test/PCH/missing-file.cpp: Try to suppress accidental false on Windows.

%t.h might be touched by scanners as a hot file on Windows, to fail to remove %.h with single run.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@163697 91177308-0d34-0410-b5e6-96231b3b80d8

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