Teach CursorVisitor about duplicate ObjCPropertyDecls that can arise because of a current
design limitation in how we handle Objective-C class extensions.  This was causing the CursorVisitor
to essentially visit an @property twice (once in the @interface, the other in the class extension).
Fixes <rdar://problem/7410145>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104055 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed