Always call the refnanny on function exit if we set it up on entry, not just...

Always call the refnanny on function exit if we set it up on entry, not just in GIL-owning functions.
This was previously using inconsistent conditions on entry and exit of the function.

Cython/Compiler/Nodes.py

@@ -2175,8 +2175,7 @@ class FuncDefNode(StatNode, BlockNode):
                     code.put_trace_return(
                         "Py_None", nogil=not gil_owned['success'])
 
-        if not lenv.nogil:
-            # GIL holding function
+        if use_refnanny:
             code.put_finish_refcount_context(nogil=not gil_owned['success'])
 
         if acquire_gil or (lenv.nogil and gil_owned['success']):