Merge pull request #42466 from nekomatata/x11-events-mutex-leak

[3.2] Fix leak with events mutex in OS_X11

platform/x11/os_x11.cpp

@@ -871,6 +871,8 @@ void OS_X11::finalize() {
 	if (xmbstring)
 		memfree(xmbstring);
 
+	memdelete(events_mutex);
+
 	args.clear();
 }