feat: call clear_context in doubt

src/thread/thread.c

@@ -217,7 +217,7 @@ void __attribute__((destructor)) clear_last_thread()
     TRACE("POST");
     // Running is the initial main thread. Just free the entry.
     if (!WAS_ALLOCATED(running)) {
-        free(running);
+        clear_context();
         exit(0);
     }