[10639] Making dummy effect of spell 54530 be positive effect.

Signed-off-by: NoFantasy <nofantasy@nf.no>

src/game/SpellMgr.cpp

@@ -637,6 +637,8 @@ bool IsPositiveEffect(uint32 spellId, SpellEffectIndex effIndex)
             {
                 case 28441:                                 // AB Effect 000
                     return false;
+                case 54530:                                 // Opening
+                    return true;
                 default:
                     break;
             }