No need for the manual quotes and extra getName() call. No functional changes intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@198047 91177308-0d34-0410-b5e6-96231b3b80d8
Parameterizing some MS property-related diagnostics. No functional changes intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@198049 91177308-0d34-0410-b5e6-96231b3b80d8