[FIX][7774] Fix pet quest giver doesn't update status

[Auntie Mangos]

* What bug does the patch fix? What features does the patch add?

Pet quest giver doesn't update status when player accepted or finished the quest.

* For which repository revision was the patch created?

[7760]

* Is there a thread in the bug report section or at lighthouse? If yes, please add a link to the thread.

Serials fixes for Children's Week:)

http://getmangos.eu/community/viewtopic.php?id=7773

* Who has been writing this patch? Please include either forum user names or email addresses.

Me.

Patch:

diff --git a/src/game/QuestHandler.cpp b/src/game/QuestHandler.cpp
index 7e8e1a5..c458fe8 100644
--- a/src/game/QuestHandler.cpp
+++ b/src/game/QuestHandler.cpp
@@ -609,7 +609,7 @@ void WorldSession::HandleQuestgiverStatusQueryMultipleOpcode(WorldPacket& /*recv
        uint8 questStatus = DIALOG_STATUS_NONE;
        uint8 defstatus = DIALOG_STATUS_NONE;

-        if(IS_CREATURE_GUID(*itr))
+        if (IS_CREATURE_OR_PET_GUID(*itr))
        {
            // need also pet quests case support
            Creature *questgiver = ObjectAccessor::GetCreatureOrPetOrVehicle(*GetPlayer(),*itr);

[VladimirMangos]

In [7774]. Thank you