Warning fixes to operator precedence warnings.

Someone should double-check that I didn't somehow break ObjC 
serialization; I think the change there actually changes the semantics.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61098 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed