avoid useless indirection during CFunction setup and instead use known module...

avoid useless indirection during CFunction setup and instead use known module dict reference directly

Cython/Compiler/ExprNodes.py

@@ -7798,7 +7798,7 @@ class PyCFunctionNode(ExprNode, ModuleNameMixin):
                 self.get_py_qualified_name(code),
                 self.self_result_code(),
                 self.get_py_mod_name(code),
-                "PyModule_GetDict(%s)" % Naming.module_cname,
+                Naming.moddict_cname,
                 code_object_result,
                 code.error_goto_if_null(self.result(), self.pos)))