Core/Spells: Corrected haste affecting GCDs to match 3.3.5 client logic

src/server/game/Spells/Spell.cpp

@@ -8469,11 +8469,16 @@ void Spell::TriggerGlobalCooldown()
     if (!CanHaveGlobalCooldown(m_caster))
         return;
 
-    int32 gcd = m_spellInfo->StartRecoveryTime;
-    if (!gcd || !m_spellInfo->StartRecoveryCategory)
+    if (!m_spellInfo->StartRecoveryCategory)
         return;
 
+    if (m_caster->GetTypeId() == TYPEID_PLAYER)
+        if (m_caster->ToPlayer()->GetCommandStatus(CHEAT_COOLDOWN))
+            return;
+
     // Global cooldown can't leave range 1..1.5 secs
+    int32 gcd = m_spellInfo->StartRecoveryTime;
+
     // gcd modifier auras are applied only to own spells and only players have such mods
     if (Player* modOwner = m_caster->GetSpellModOwner())
         modOwner->ApplySpellMod(m_spellInfo->Id, SPELLMOD_GLOBAL_COOLDOWN, gcd, this);