NSErrorChecker: remove quoting the parameter name in the diagnostic until we actually include it's name.

This is a possible regression of moving to using ImplicitNullDerefEvent.
Fixing this for real (including the parameter name) requires more
plumbing in ImplicitNullDerefEvent.  This is just a stop gap fix.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171502 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed