Fix variable re-use

lib/imap.js

@@ -452,19 +452,20 @@ ImapConnection.prototype.connect = function(loginCb) {
         self.debug&&self.debug('[parsing incoming] saw untagged ' + m[1]);
         switch (m[1]) {
           case 'OK':
+            var code = m[2];
             if (state.status === STATES.NOAUTH) {
               if (!state.isReady) {
                 state.isReady = true;
                 state.conn.emit('ready');
               }
-            } else if (/^ALERT$/i.test(m[2]))
+            } else if (/^ALERT$/i.test(code))
               self.emit('alert', m[3]);
             else if (state.status === STATES.BOXSELECTING) {
-              if (m = /^UIDVALIDITY (\d+)/i.exec(m[2]))
+              if (m = /^UIDVALIDITY (\d+)/i.exec(code))
                 state.box.uidvalidity = m[1];
-              else if (m = /^UIDNEXT (\d+)/i.exec(m[2]))
+              else if (m = /^UIDNEXT (\d+)/i.exec(code))
                 state.box.uidnext = m[1];
-              else if (m = /^PERMANENTFLAGS \((.*)\)/i.exec(m[2])) {
+              else if (m = /^PERMANENTFLAGS \((.*)\)/i.exec(code)) {
                 var idx, permFlags, keywords;
                 state.box.permFlags = permFlags = m[1].split(' ');
                 if ((idx = state.box.permFlags.indexOf('\\*')) > -1) {