Core/Spells: corrected Eviscerate AP contribution

src/server/game/Spells/SpellEffects.cpp

@@ -498,8 +498,7 @@ void Spell::EffectSchoolDMG(SpellEffIndex effIndex)
                     {
                         if (uint32 combo = player->GetComboPoints())
                         {
-                            float ap = m_caster->GetTotalAttackPowerValue(BASE_ATTACK);
-                            damage += irand(int32(ap * combo * 0.03f), int32(ap * combo * 0.07f));
+                            damage += int32(m_caster->GetTotalAttackPowerValue(BASE_ATTACK) * 0.091f * combo);
 
                             // Eviscerate and Envenom Bonus Damage (item set effect)
                             if (m_caster->HasAura(37169))