Fix <rdar://problem/6574319> clang issues error on 'readonly' property with a defaul setter attribute.

Needed to make isPropertyReadonly() non-const (for this fix to compile). I imagine there's a way to retain the const-ness, however I have more important fish to fry.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65562 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed