Objective-C. Minor change to a diagnostic.
// rdar://15499111


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@196977 91177308-0d34-0410-b5e6-96231b3b80d8
darwin asm driver: suppress -Q for -no-integrated-as on darwin<11

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@196981 91177308-0d34-0410-b5e6-96231b3b80d8