Cleanup PyConfig in interpreter deletion

Also removes some redundant calls.

Author: ashm-dev

Python/pylifecycle.c

@@ -1960,8 +1960,6 @@ finalize_interp_delete(PyInterpreterState *interp)
        created GIL, which ensures that Py_Initialize / Py_FinalizeEx can be
        called multiple times. */
 
-    PyConfig_Clear(&interp->config);
-
     PyInterpreterState_Delete(interp);
 }
 
@@ -2507,7 +2505,6 @@ new_interpreter(PyThreadState **tstate_p,
     if (tstate != NULL) {
         Py_EndInterpreter(tstate);
     } else if (interp != NULL) {
-        PyConfig_Clear(&interp->config);
         PyInterpreterState_Delete(interp);
     }
     if (save_tstate != NULL) {

Python/pystate.c

@@ -963,6 +963,8 @@ PyInterpreterState_Delete(PyInterpreterState *interp)
 
     _PyObject_FiniState(interp);
 
+    PyConfig_Clear(&interp->config);
+
     free_interpreter(interp);
 }