Core/Creature: Fix creature respawn time in unloaded/inactive grid cells.

Fixes issue 1865.

--HG--
branch : trunk

src/server/game/Entities/Creature/Creature.h

@@ -589,7 +589,7 @@ class Creature : public Unit, public GridObject<Creature>
 
         bool IsVisibleInGridForPlayer(Player const* pl) const;
 
-        void RemoveCorpse();
+        void RemoveCorpse(bool setSpawnTime = true);
         bool isDeadByDefault() const { return m_isDeadByDefault; };
 
         void ForcedDespawn(uint32 timeMSToDespawn = 0);
@@ -684,7 +684,7 @@ class Creature : public Unit, public GridObject<Creature>
         uint64 m_lootRecipient;
 
         /// Timers
-        uint32 m_deathTimer;                                // (msecs)timer for death or corpse disappearance
+        uint32 m_corpseRemoveTime;                          // (msecs)timer for death or corpse disappearance
         time_t m_respawnTime;                               // (secs) time of next respawn
         uint32 m_respawnDelay;                              // (secs) delay between corpse disappearance and respawning
         uint32 m_corpseDelay;                               // (secs) delay between death and corpse disappearance