Fix <rdar://problem/5979875> clang on xcode: error: use of undeclared identifier 'super'


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51888 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/StmtPrinter.cpp b/lib/AST/StmtPrinter.cpp
index d52f48e..a740fac 100644
--- a/lib/AST/StmtPrinter.cpp
+++ b/lib/AST/StmtPrinter.cpp
@@ -476,6 +476,10 @@
   OS << Node->getDecl()->getName();
 }
 
+void StmtPrinter::VisitObjCSuperRefExpr(ObjCSuperRefExpr *Node) {
+  OS << "super";
+}
+
 void StmtPrinter::VisitObjCIvarRefExpr(ObjCIvarRefExpr *Node) {
   if (Node->getBase()) {
     PrintExpr(Node->getBase());