Objective-C [qoi]. Patch to not do Fix-It for fixing
a messaging expression except in the simple case
of a unary selector. We cannot reliably provide such a fixit due
to numerous reasons where a matching selector could not be found.
rdar://15756038


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@215480 91177308-0d34-0410-b5e6-96231b3b80d8