[libclang] Correct annotation and taking of cursor for objc class references
inside the IBOutletCollection attribute.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139621 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index 40b2194..2f8db5d 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -559,7 +559,15 @@
       }
     }
   }
-  
+
+  if (Cursor.kind == CXCursor_IBOutletCollectionAttr) {
+    IBOutletCollectionAttr *A =
+      cast<IBOutletCollectionAttr>(cxcursor::getCursorAttr(Cursor));
+    if (const ObjCInterfaceType *InterT = A->getInterface()->getAs<ObjCInterfaceType>())
+      return Visit(cxcursor::MakeCursorObjCClassRef(InterT->getInterface(),
+                                                    A->getInterfaceLoc(), TU));
+  }
+
   // Nothing to visit at the moment.
   return false;
 }