Fix printing CXXTemporaryObjectExpr with default args.

Patch by Will Wilson.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@182651 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/StmtPrinter.cpp b/lib/AST/StmtPrinter.cpp
index 2edb078..467413b 100644
--- a/lib/AST/StmtPrinter.cpp
+++ b/lib/AST/StmtPrinter.cpp
@@ -1339,6 +1339,8 @@
   for (CXXTemporaryObjectExpr::arg_iterator Arg = Node->arg_begin(),
                                          ArgEnd = Node->arg_end();
        Arg != ArgEnd; ++Arg) {
+    if (Arg->isDefaultArgument())
+      break;
     if (Arg != Node->arg_begin())
       OS << ", ";
     PrintExpr(*Arg);