keep gossip open when enchanting with no item equipped

Author: Boidlz

src/npc_enchanter.cpp

@@ -1098,7 +1098,7 @@ class npc_enchantment : public CreatureScript
         {
             creature->HandleEmoteCommand(EMOTE_ONESHOT_LAUGH);
             creature->Whisper("Please equip the item you would like to enchant!", LANG_UNIVERSAL, player);
-            player->PlayerTalkClass->SendCloseGossip();
+            OnGossipHello(player, creature);
             return;
         }