Add basic support for properties references (a missing feature).

While it is far from complete, it does fix the following <rdar://problem/5967199> clang on xcode: error: member reference is not to a structure or union



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51719 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Expr.cpp b/lib/AST/Expr.cpp
index 502dd3b..eb9add9 100644
--- a/lib/AST/Expr.cpp
+++ b/lib/AST/Expr.cpp
@@ -1187,6 +1187,15 @@
   return reinterpret_cast<Stmt**>(&Base)+1;
 }
 
+// ObjCIvarRefExpr
+Stmt::child_iterator ObjCPropertyRefExpr::child_begin() {
+  return reinterpret_cast<Stmt**>(&Base);
+}
+
+Stmt::child_iterator ObjCPropertyRefExpr::child_end() {
+  return reinterpret_cast<Stmt**>(&Base)+1;
+}
+
 // PreDefinedExpr
 Stmt::child_iterator PreDefinedExpr::child_begin() { return child_iterator(); }
 Stmt::child_iterator PreDefinedExpr::child_end() { return child_iterator(); }