Fixed one error which made it break the test suite. Now it doesn't break, but...

Fixed one error which made it break the test suite. Now it doesn't break, but still needs more test cases to see if the functionality works on all inputs.

Cython/Compiler/ExprNodes.py

@@ -2870,7 +2870,8 @@ class IndexNode(ExprNode):
                 type_node = Nodes.TemplatedTypeNode(
                     pos = self.pos,
                     positional_args = template_values,
-                    keyword_args = None)
+                    keyword_args = None,
+                    is_reference = False)
                 return type_node.analyse(env, base_type = base_type)
             else:
                 index = self.index.compile_time_value(env)