meta: fix uninitialized command-line argument logic

shell/main.cpp

@@ -334,7 +334,7 @@ int main(int argc, char **argv)
 
 	/* Stores whether we have already idled once, handling extra rom
 	 * and execute options */
-	bool has_idled;
+	bool has_idled = false;
 
 	/* Shell main loop */
 	while(true) {