Connection: pass COPYUID info if server has UIDPLUS

lib/Connection.js

@@ -745,9 +745,11 @@ Connection.prototype._move = function(which, uids, boxTo, cb) {
         else
           self.seq.addFlags(uids, '\\Deleted', cbMarkDel);
       } else if (task === 3) {
-        if (which && self.serverSupports('UIDPLUS'))
+        if (which && self.serverSupports('UIDPLUS')) {
-          self.expunge(uids, cb);
+          self.expunge(uids, function(e) {
-        else {
+            cb(e, info);
+          });
+        } else {
           self.expunge(function(e) {
             ++task;
             ccb(e, info);