Core/GOs: When unlinking Fishing Bobber from player to prevent despawning, unlink from spell as well to prevent removing unwanted auras

src/server/game/Entities/GameObject/GameObject.cpp

@@ -1404,6 +1404,7 @@ void GameObject::Use(Unit* user)
                         // prevent removing GO at spell cancel
                         RemoveFromOwner();
                         SetOwnerGUID(player->GetGUID());
+                        SetSpellId(0); // prevent removing unintended auras at Unit::RemoveGameObject
 
                         /// @todo find reasonable value for fishing hole search
                         GameObject* ok = LookupFishingHoleAround(20.0f + CONTACT_DISTANCE);