Fixing a typo in the opening bet check.

lib/currency.js

@@ -207,7 +207,7 @@ Currency.prototype.commands = function (data) {
             if (data[4] === 'bet') {
                 switch (data[5]) {
                     case 'open':
-                        if (data[5] && data[6]) {
+                        if (data[6] && data[7]) {
                             __self.bets(true, data);
                         } else {
                             __self.irc.emit('message', {message:__self.pre_text + 'Unable to open betting, need at least two items to bet against'});