clang/test/Tooling/clang-check-pwd.cpp: Add "REQUIRES: shell".

This passes on MSYS bash and Cygwin.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156929 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed