Fix nodiscard test when modules are enabled

llvm-svn: 318618
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 518f24b5b9478f0680e0c30db8835c5a15f3096a
1 file changed