Core/Spells: fix Global Cooldown reset on spell cast interrupt.

src/server/game/Spells/Spell.cpp

@@ -3015,10 +3015,6 @@ void Spell::cancel()
     if (m_spellState == SPELL_STATE_FINISHED)
         return;
 
-    SetReferencedFromCurrent(false);
-    if (m_selfContainer && *m_selfContainer == this)
-        *m_selfContainer = NULL;
-
     uint32 oldState = m_spellState;
     m_spellState = SPELL_STATE_FINISHED;
 
@@ -3053,6 +3049,10 @@ void Spell::cancel()
             break;
     }
 
+    SetReferencedFromCurrent(false);
+    if (m_selfContainer && *m_selfContainer == this)
+        *m_selfContainer = NULL;
+
     if (m_caster->GetTypeId() == TYPEID_PLAYER)
         m_caster->ToPlayer()->RemoveGlobalCooldown(m_spellInfo);