Core/Misc: Replace time(NULL) with GameTime::GetGameTime()

(ported commit: 12701cb0c6c45eb105ad449eb9a56e76d84d691e)

src/server/game/Entities/Unit/Unit.cpp

@@ -12313,7 +12313,7 @@ bool Unit::SetCharmedBy(Unit* charmer, CharmType type, AuraApplication const* au
                             GetCharmInfo()->SetPetNumber(sObjectMgr->GeneratePetNumber(), true);
 
                         // if charmed two demons the same session, the 2nd gets the 1st one's name
-                        SetUInt32Value(UNIT_FIELD_PET_NAME_TIMESTAMP, uint32(time(nullptr))); // cast can't be helped
+                        SetUInt32Value(UNIT_FIELD_PET_NAME_TIMESTAMP, uint32(GameTime::GetGameTime())); // cast can't be helped
                     }
                 }
                 playerCharmer->CharmSpellInitialize();
@@ -14740,7 +14740,7 @@ void Unit::UpdateLastDamagedTime(SpellInfo const* spellProto)
     if (spellProto && spellProto->HasAura(SPELL_AURA_DAMAGE_SHIELD))
         return;
 
-    SetLastDamagedTime(time(nullptr));
+    SetLastDamagedTime(GameTime::GetGameTime());
 }
 
 bool Unit::IsHighestExclusiveAura(Aura const* aura, bool removeOtherAuraApplications /*= false*/)