Fixed check for ongoing mash game.

src/games/mash.js

@@ -148,7 +148,7 @@ function onCommand(args, context) {
 		return;
 	}
 
-	if (!word || !mash) {
+	if (!word && !mash) {
 		context.sendMessage(`Start a mash with ${config.prefix}mash {length}`, context.room.id);
 		return;
 	}