Fix C++ testcase I forgot to add to r316689.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@316695 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 38a85bd42aec616f085aef2591cf0da895ab9082)
1 file changed