Drop interp var and use tstate->interp in debug code

Author: tiran

Python/pylifecycle.c

@@ -1644,9 +1644,6 @@ Py_FinalizeEx(void)
 
     /* Get current thread state and interpreter pointer */
     PyThreadState *tstate = _PyRuntimeState_GetThreadState(runtime);
-#if (defined(Py_REF_DEBUG) || defined(Py_TRACE_REFS) || defined(WITH_PYMALLOC))
-    PyInterpreterState *interp = tstate->interp;
-#endif
 
     // Wrap up existing "threading"-module-created, non-daemon threads.
     wait_for_thread_shutdown(tstate);
@@ -1669,13 +1666,13 @@ Py_FinalizeEx(void)
     /* Copy the core config, PyInterpreterState_Delete() free
        the core config memory */
 #ifdef Py_REF_DEBUG
-    int show_ref_count = interp->config.show_ref_count;
+    int show_ref_count = tstate->interp->config.show_ref_count;
 #endif
 #ifdef Py_TRACE_REFS
-    int dump_refs = interp->config.dump_refs;
+    int dump_refs = tstate->interp->config.dump_refs;
 #endif
 #ifdef WITH_PYMALLOC
-    int malloc_stats = interp->config.malloc_stats;
+    int malloc_stats = tstate->interp->config.malloc_stats;
 #endif
 
     /* Remaining daemon threads will automatically exit