Laundry: Twitch Plays shows invalid command when setting the controls to the already selected setting.

[AndrioCelos]

This is what was shown in the log file:

[IRC:Read] :Andrio!*@* PRIVMSG #bombsquad :!1 set dry tumble dry
[Laundry TwitchPlays #2] - Setting Dry to Tumble Dry - set dry tumble dry
Laundry already set to desired values

But this is what was shown on IRC:

Andrio: !1 set dry tumble try
ktane: @Andrio, that command for 1 (Laundry) is invalid.

To correct this, the code should yield return null before yield break on line 689.