output/PipeWire: lock thread loop in SendTag

NEWS

 ver 0.23.13 (not yet released)
 * input
   - curl: fix busy loop after connection failed
+* output
+  - pipewire: fix corruption bug due to missing lock
 
 ver 0.23.12 (2023/01/17)
 * input

src/output/plugins/PipeWireOutputPlugin.cxx

@@ -973,6 +973,8 @@ PipeWireOutput::SendTag(const Tag &tag)
 
 	struct spa_dict dict = SPA_DICT_INIT(items, n_items);
 
+	const PipeWire::ThreadLoopLock lock(thread_loop);
+
 	auto rc = pw_stream_update_properties(stream, &dict);
 	if (rc < 0)
 		LogWarning(pipewire_output_domain, "Error updating properties");