opt: allow bind multi action to one keybind

src/ext-protocol/dwl-ipc.h

@@ -281,7 +281,7 @@ void dwl_ipc_output_dispatch(struct wl_client *client,
 							 const char *arg3, const char *arg4,
 							 const char *arg5) {
 
-	void (*func)(const Arg *);
+	int (*func)(const Arg *);
 	Arg arg;
 	func = parse_func_name((char *)dispatch, &arg, (char *)arg1, (char *)arg2,
 						   (char *)arg3, (char *)arg4, (char *)arg5);