fixup crash from gha

Author: jiridanek

src/python_embedded.c

@@ -639,6 +639,11 @@ static uint64_t qd_io_rx_handler(void *context, qd_message_t *msg, int link_id,
     IoAdapter *self = (IoAdapter*) context;
     *error = 0;
 
+    if (self->handler == NULL) {
+        *error = qdr_error(QD_AMQP_COND_INTERNAL_ERROR, "Router is shutting down");
+        return PN_REJECTED;
+    }
+
     //
     // Parse the message through the body and exit if the message is not well formed.
     //

src/router_core/router_core.c

@@ -255,6 +255,10 @@ void qdr_core_free(qdr_core_t *core)
     // this must happen after qdrc_endpoint_do_cleanup_CT calls
     qdr_modules_finalize(core);
 
+    // Drain the general work lists
+    //  (this can also generate actions, e.g. qdr_forward_on_message -> qd_io_rx_handler call chain does that)
+    qdr_general_handler(core);
+
     // discard any left over actions
 
     qdr_action_list_t  action_list;
@@ -268,9 +272,6 @@ void qdr_core_free(qdr_core_t *core)
         action = DEQ_HEAD(action_list);
     }
 
-    // Drain the general work lists
-    qdr_general_handler(core);
-
     sys_thread_free(core->thread);
     sys_cond_free(core->action_cond);
     sys_mutex_free(core->action_lock);