Core/Commands: Fixed .npc add overwriting existing spawns when used on transports

src/server/scripts/Commands/cs_npc.cpp

@@ -350,9 +350,10 @@ public:
 
         if (MapTransport* trans = chr->GetMapTransport())
         {
-            ObjectGuid::LowType guid = map->GenerateLowGuid<HighGuid::Unit>();
+            ObjectGuid::LowType guid = sObjectMgr->GenerateCreatureSpawnId();
             CreatureData& data = sObjectMgr->NewOrExistCreatureData(guid);
             data.spawnId = guid;
+            data.spawnGroupData = sObjectMgr->GetDefaultSpawnGroup();
             data.id = id;
             data.spawnPoint.Relocate(chr->GetTransOffsetX(), chr->GetTransOffsetY(), chr->GetTransOffsetZ(), chr->GetTransOffsetO());