Picked up a new revision of Clang to pull in Objective-C

enhancements.  With these enhancements, the return values
of Objective-C methods with unknown return types can be
implicitly cast to id for the purpose of making method
calls.

So what would have required this:

(int)[(id)[ClassWithNoDebugInfo methodReturningObject] methodReturningInt]

can now be written as:

(int)[[ClassWithNoDebugInfo methodReturningObject] methodReturningInt]

llvm-svn: 145567