Update dbcore.cpp

This reverts commit 96e1e76306.

common/dbcore.cpp

@@ -302,7 +302,9 @@ std::string DBcore::Escape(const std::string& s)
 
 void DBcore::SetMutex(Mutex *mutex)
 {
-	safe_delete(m_mutex);
+	if (m_mutex && m_mutex != mutex) {
+		safe_delete(m_mutex);
+	}
 
 	DBcore::m_mutex = mutex;
 }

world/zonelist.cpp

@@ -894,7 +894,8 @@ void ZSList::SendServerReload(ServerReload::Type type, uchar *packet)
 		ServerReload::Type::Commands,
 		ServerReload::Type::PerlExportSettings,
 		ServerReload::Type::DataBucketsCache,
-		ServerReload::Type::WorldRepop
+		ServerReload::Type::WorldRepop,
+		ServerReload::Type::WorldWithRespawn
 	};
 
 	// Set requires_zone_booted flag before executing reload logic

zone/client.cpp

@@ -708,6 +708,9 @@ Client::Client(EQStreamInterface *ieqs) : Mob(
 }
 
 Client::~Client() {
+	entity_list.RemoveMobFromCloseLists(this);
+	m_close_mobs.clear();
+
 	if (ClientVersion() == EQ::versions::ClientVersion::RoF2 && RuleB (Parcel, EnableParcelMerchants)) {
 		DoParcelCancel();
 	}

zone/entity.cpp

@@ -2933,7 +2933,7 @@ void EntityList::ScanCloseMobs(Mob *scanning_mob)
 	for (auto &e : mob_list) {
 		auto mob = e.second;
 
-		if (mob->GetID() <= 0) {
+		if (mob && mob->GetID() <= 0) {
 			continue;
 		}
 

zone/loot.cpp

@@ -375,6 +375,10 @@ void NPC::AddLootDrop(
 				if (item2->Slots & slots) {
 					if (equipment[i]) {
 						compitem = database.GetItem(equipment[i]);
+						if (!compitem) {
+							continue;
+						}
+
 						if (item2->AC > compitem->AC || (item2->AC == compitem->AC && item2->HP > compitem->HP)) {
 							// item would be an upgrade
 							// check if we're multi-slot, if yes then we have to keep
@@ -385,6 +389,9 @@ void NPC::AddLootDrop(
 							else {
 								// Unequip old item
 								auto *old_item = GetItem(i);
+								if (!old_item) {
+									continue;
+								}
 
 								old_item->equip_slot = EQ::invslot::SLOT_INVALID;
 
@@ -677,7 +684,7 @@ LootItem *NPC::GetItem(int slot_id)
 	end = m_loot_items.end();
 	for (; cur != end; ++cur) {
 		LootItem *item = *cur;
-		if (item->equip_slot == slot_id) {
+		if (item && item->equip_slot == slot_id) {
 			return item;
 		}
 	}

zone/mob.cpp

@@ -531,6 +531,9 @@ Mob::Mob(
 
 Mob::~Mob()
 {
+	entity_list.RemoveMobFromCloseLists(this);
+	m_close_mobs.clear();
+
 	quest_manager.stopalltimers(this);
 
 	mMovementManager->RemoveMob(this);
@@ -570,11 +573,8 @@ Mob::~Mob()
 	entity_list.UnMarkNPC(GetID());
 	UninitializeBuffSlots();
 
-	entity_list.RemoveMobFromCloseLists(this);
 	entity_list.RemoveAuraFromMobs(this);
 
-	m_close_mobs.clear();
-
 	ClearDataBucketCache();
 
 	LeaveHealRotationTargetPool();

zone/worldserver.cpp

@@ -4663,14 +4663,19 @@ void WorldServer::ProcessReload(const ServerReload::Request& request)
 		case ServerReload::Type::WorldRepop:
 			entity_list.ClearAreas();
 			parse->ReloadQuests();
-			zone->Repop();
+			if (zone && zone->IsLoaded()) {
+				zone->Repop();
+			}
 			break;
 
 		case ServerReload::Type::WorldWithRespawn:
-			entity_list.ClearAreas();
 			parse->ReloadQuests();
-			zone->Repop();
+			if (zone && zone->IsLoaded()) {
-			zone->ClearSpawnTimers();
+				entity_list.ClearAreas();
+				zone->Repop();
+				zone->ClearSpawnTimers();
+			}
+
 			break;
 
 		case ServerReload::Type::ZonePoints: