Objective-C. Diagose use of undefined protocols
when a class adopts a protocol that inherits from 
undefined protocols. // rdar://16111182


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@203586 91177308-0d34-0410-b5e6-96231b3b80d8
Remove trailing whitespace introduced in r203028.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@203588 91177308-0d34-0410-b5e6-96231b3b80d8