Stop swaybar from not rendering after the first go around

I am not sure if this is a correct issue/fix but on my system at least
after an i3bar protocol is detected this while loop never goes back
around meaning it doesnt process the status line anymore.

swaybar/main.c

@@ -690,11 +690,10 @@ void poll_for_update() {
 		if (dirty && window_prerender(window) && window->cairo) {
 			render();
 			window_render(window);
-		}
-
 			if (wl_display_dispatch(registry->display) == -1) {
 				break;
 			}
+		}
 
 		dirty = false;
 		FD_ZERO(&readfds);