[arcmt] It's not safe to remove the -release on "[[someivar delegate]...

[arcmt] It's not safe to remove the -release on "[[someivar delegate] release];" since it's very likely
that, after migration, the object that was passed to 'setDelegate:' will not be properly retained, e.g:

-whatever {
  id x = [[MyDoHicky alloc] init];
  [someivar setDelegate: x]; // x won't get retained in ARC.
}
-dealloc {
  [[someivar delegate] release]; // give migration error here.
}

rdar://8858009

llvm-svn: 135327