Add another missing -enable-import-metadata to test

r320895 modified a test so that it needs -enable-import-metadata which
is false by default for NDEBUG, found another place that needs this
added.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320903 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed