Core/Spells: added underlying type to SpellEffects enum to fix a couple mismatching sign warnings

src/server/game/Miscellaneous/SharedDefines.h

@@ -901,7 +901,7 @@ enum Team
     TEAM_OTHER               = 0                            // if ReputationListId > 0 && Flags != FACTION_FLAG_TEAM_HEADER
 };
 
-enum SpellEffects
+enum SpellEffects : uint32
 {
     SPELL_EFFECT_INSTAKILL                          = 1,
     SPELL_EFFECT_SCHOOL_DAMAGE                      = 2,

src/server/game/Spells/SpellInfo.cpp

@@ -399,7 +399,7 @@ bool SpellEffectInfo::IsAura() const
 
 bool SpellEffectInfo::IsAura(AuraType aura) const
 {
-    return IsAura() && ApplyAuraName == uint32(aura);
+    return IsAura() && ApplyAuraName == aura;
 }
 
 bool SpellEffectInfo::IsTargetingArea() const