Debugger: Fix internal type dumper

Change-Id: I5c9ad7c5f95980bb85e07f1ea6dddcdf8b8a19a2
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

share/qtcreator/debugger/creatortypes.py

@@ -74,7 +74,7 @@ def qdump__CPlusPlus__IntegerType(d, value):
     d.putPlainChildren(value)
 
 def qdump__CPlusPlus__NamedType(d, value):
-    literal = downcast(value["_name"])
+    literal = d.downcast(value["_name"])
     d.putValue(d.encodeCharArray(literal["_chars"]), Hex2EncodedLatin1)
     d.putPlainChildren(value)