*Allow Wintergrasp Spirit Healers to cast their spell, by manuel

--HG--
branch : trunk

src/game/SpellMgr.cpp

@@ -2687,7 +2687,7 @@ SpellCastResult SpellMgr::GetSpellAllowedInLocationError(SpellEntry const *spell
             if (!mapEntry)
                 return SPELL_FAILED_INCORRECT_AREA;
 
-            return mapEntry->IsBattleGround() && player && player->InBattleGround() ? SPELL_CAST_OK : SPELL_FAILED_REQUIRES_AREA;
+            return zone_id == 4197 || mapEntry->IsBattleGround() && player && player->InBattleGround() ? SPELL_CAST_OK : SPELL_FAILED_REQUIRES_AREA;
         }
         case 44521:                                         // Preparation
         {