*Fix Impurity.

--HG--
branch : trunk

src/game/Unit.cpp

@@ -10213,6 +10213,9 @@ void Unit::MeleeDamageBonus(Unit *pVictim, uint32 *pdamage,WeaponAttackType attT
                 }
             }
         }
+        // This is not a typo - Impurity has SPELLFAMILY_DRUID
+        if (AuraEffect const * aurEff = GetDummyAura(SPELLFAMILY_DRUID, 1986, 0))
+            APbonus *= (100.0f + aurEff->GetAmount()) / 100.0f;
 
         DoneFlatBenefit += int32(APbonus/14.0f * GetAPMultiplier(attType,normalized));
     }