Clear application message queue after baseband is shut down.

firmware/application/baseband_api.cpp

@@ -115,6 +115,8 @@ void shutdown() {
 	ShutdownMessage message;
 	send_message(&message);
 
+	shared_memory.application_queue.reset();
+	
 	baseband_image_running = false;
 }
 

firmware/common/message_queue.hpp

@@ -74,6 +74,10 @@ public:
 		return fifo.is_empty();
 	}
 
+	void reset() {
+		fifo.reset();
+	}
+	
 private:
 	FIFO<uint8_t> fifo;
 	Mutex mutex_write;