Fix C++ compilation issue

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index bbae5ff27e5273e96c8410ada4479e0d55f3e863..5563251ccbbf8b3010ebed457a3d75c634463e8c 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -1626,7 +1626,7 @@ typename Traits::Type::Expression ParserBase<Traits>::ParseAssignmentExpression(
     return expression;
   }
 
-  if (!IsValidLeftHandSide(expression)) {
+  if (!this->IsValidLeftHandSide(expression)) {

[tfarina, 2014/03/19 17:33:01]

what was the error? Usually it is good to paste it in the CL description. Was
this clang only?

[rossberg, 2014/03/19 18:13:16]

The usual C++ idiocy about template parameter dependent name resolution, that
only some compilers bother to diagnose. Why?

     this->ReportMessageAt(lhs_location, "invalid_lhs_in_assignment", true);
     *ok = false;
     return this->EmptyExpression();