Core/Quest: Fix crash in GetQuestDialogStatus()

Fix possible NULL dereference in GetQuestDialogStatus()
Fixes #22516

(cherry picked from commit 6859dfa2d157f0d174004a00a9d047d6eb38f9a1)

1 files changed, 6 insertions, 4 deletions

diff --git a/src/server/game/Entities/Player/Player.cpp b/src/server/game/Entities/Player/Player.cpp
index a8dc4d1919f..f9fe83239d4 100644
--- a/src/server/game/Entities/Player/Player.cpp
+++ b/src/server/game/Entities/Player/Player.cpp
@@ -16496,16 +16496,18 @@ QuestGiverStatus Player::GetQuestDialogStatus(Object* questgiver)
     {
         case TYPEID_GAMEOBJECT:
         {
-            if (Optional<QuestGiverStatus> questStatus = questgiver->ToGameObject()->AI()->GetDialogStatus(this))
-                return *questStatus;
+            if (GameObjectAI* ai = questgiver->ToGameObject()->AI())
+                if (Optional<QuestGiverStatus> questStatus = ai->GetDialogStatus(this))
+                    return *questStatus;
             qr = sObjectMgr->GetGOQuestRelationBounds(questgiver->GetEntry());
             qir = sObjectMgr->GetGOQuestInvolvedRelationBounds(questgiver->GetEntry());
             break;
         }
         case TYPEID_UNIT:
         {
-            if (Optional<QuestGiverStatus> questStatus = questgiver->ToCreature()->AI()->GetDialogStatus(this))
-                return *questStatus;
+            if (CreatureAI* ai = questgiver->ToCreature()->AI())
+                if (Optional<QuestGiverStatus> questStatus = questgiver->ToCreature()->AI()->GetDialogStatus(this))
+                    return *questStatus;
             qr = sObjectMgr->GetCreatureQuestRelationBounds(questgiver->GetEntry());
             qir = sObjectMgr->GetCreatureQuestInvolvedRelationBounds(questgiver->GetEntry());
             break;