[7257] Fixed unexpected errors in log and non-freed memory at battleground system shutdown.

src/game/BattleGround.cpp

@@ -1322,6 +1322,9 @@ void BattleGround::SpawnBGCreature(uint32 type, uint32 respawntime)
 */
 bool BattleGround::DelCreature(uint32 type)
 {
+    if(!m_BgCreatures[type])
+        return true;
+
     Creature *cr = HashMapHolder<Creature>::Find(m_BgCreatures[type]);
     if(!cr)
     {
@@ -1336,6 +1339,9 @@ bool BattleGround::DelCreature(uint32 type)
 
 bool BattleGround::DelObject(uint32 type)
 {
+    if(!m_BgObjects[type])
+        return true;
+
     GameObject *obj = HashMapHolder<GameObject>::Find(m_BgObjects[type]);
     if(!obj)
     {

src/game/BattleGroundMgr.cpp

@@ -1090,16 +1090,25 @@ BattleGroundMgr::BattleGroundMgr() : m_AutoDistributionTimeChecker(0), m_ArenaTe
 
 BattleGroundMgr::~BattleGroundMgr()
 {
-    BattleGroundSet::iterator itr, next;
-    for(itr = m_BattleGrounds.begin(); itr != m_BattleGrounds.end(); itr = next)
+    DeleteAlllBattleGrounds();
+}
+
+void BattleGroundMgr::DeleteAlllBattleGrounds()
+{
+    for(BattleGroundSet::iterator itr = m_BattleGrounds.begin(); itr != m_BattleGrounds.end();)
     {
-        next = itr;
-        ++next;
         BattleGround * bg = itr->second;
-        m_BattleGrounds.erase(itr);
+        m_BattleGrounds.erase(itr++);
         delete bg;
     }
-    m_BattleGrounds.clear();
+
+    // destroy template battlegrounds that listed only in queues (other already terminated)
+    for(uint32 bgTypeId = 0; bgTypeId < MAX_BATTLEGROUND_TYPE_ID; ++bgTypeId)
+    {
+        // ~BattleGround call unregistring BG from queue
+        while(!BGFreeSlotQueue[bgTypeId].empty())
+            delete BGFreeSlotQueue[bgTypeId].front();
+    }
 }
 
 // used to update running battlegrounds, and delete finished ones

src/game/BattleGroundMgr.h

@@ -207,6 +207,7 @@ class BattleGroundMgr
         void RemoveBattleGround(uint32 instanceID) { m_BattleGrounds.erase(instanceID); }
 
         void CreateInitialBattleGrounds();
+        void DeleteAlllBattleGrounds();
 
         void SendToBattleGround(Player *pl, uint32 InstanceID);
 

src/mangosd/WorldRunnable.cpp

@@ -27,6 +27,7 @@
 #include "Timer.h"
 #include "ObjectAccessor.h"
 #include "MapManager.h"
+#include "BattleGroundMgr.h"
 
 #include "Database/DatabaseEnv.h"
 
@@ -75,6 +76,9 @@ void WorldRunnable::run()
     sWorld.KickAll();                                       // save and kick all players
     sWorld.UpdateSessions( 1 );                             // real players unload required UpdateSessions call
 
+    // unload battleground templates before different singletons destroyed
+    sBattleGroundMgr.DeleteAlllBattleGrounds();
+
     sWorldSocketMgr->StopNetwork();
 
     MapManager::Instance().UnloadAll();                     // unload all grids (including locked in memory)

src/shared/revision_nr.h

@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "7256"
+ #define REVISION_NR "7257"
 #endif // __REVISION_NR_H__