ObjectiveC. Fixes a bug where  an 'unused property ivar'
warning is coming out incorrectly too early
becuase of unrelated scope pop. // rdar://15630719


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196989 91177308-0d34-0410-b5e6-96231b3b80d8