Fix crash in pydotprint

theano/printing.py

@@ -766,11 +766,9 @@ def pydotprint(fct, outfile=None,
             varstr = '%s %s' % (dstr, str(var.type))
         elif (var in input_update and
               input_update[var].name is not None):
-            if var_with_name_simple:
-                varstr = input_update[var].variable.name
-            else:
-                varstr = (input_update[var].variable.name +
-                          str(var.type))
+            varstr = input_update[var].name
+            if not var_with_name_simple:
+                varstr += str(var.type)
         else:
             # a var id is needed as otherwise var with the same type will be
             # merged in the graph.