Core/Unit: fixed Global cooldown cancelation on spell interrupt

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

@@ -3052,15 +3052,16 @@ void Unit::InterruptSpell(CurrentSpellTypes spellType, bool withDelayed, bool wi
             if (GetTypeId() == TYPEID_PLAYER)
                 ToPlayer()->SendAutoRepeatCancel(this);
 
-        m_currentSpells[spellType] = nullptr;
-
         if (spell->getState() != SPELL_STATE_FINISHED)
             spell->cancel(interruptingSpell);
+        else
+        {
+            m_currentSpells[spellType] = nullptr;
+            spell->SetReferencedFromCurrent(false);
+        }
 
         if (GetTypeId() == TYPEID_UNIT && IsAIEnabled)
             ToCreature()->AI()->OnSpellCastFinished(spell->GetSpellInfo(), SPELL_FINISHED_CANCELED);
-
-        spell->SetReferencedFromCurrent(false);
     }
 }