fix reconnect crash

ygopro-server.coffee

@@ -1008,7 +1008,7 @@ CLIENT_is_able_to_reconnect = global.CLIENT_is_able_to_reconnect = (client, deck
   if client.system_kicked
     return false
   disconnect_info = disconnect_list[CLIENT_get_authorize_key(client)]
-  unless disconnect_info
+  unless disconnect_info and disconnect_info.deckbuf
     return false
   room = ROOM_all[disconnect_info.room_id]
   if !room

ygopro-server.js

@@ -1335,7 +1335,7 @@
       return false;
     }
     disconnect_info = disconnect_list[CLIENT_get_authorize_key(client)];
-    if (!disconnect_info) {
+    if (!(disconnect_info && disconnect_info.deckbuf)) {
       return false;
     }
     room = ROOM_all[disconnect_info.room_id];