Core/Spells: Add default handler for apply aura spell effect when both ImplicitTargets are 0, removed unused structure

src/server/game/Spells/Spell.cpp

@@ -755,6 +755,8 @@ void Spell::SelectSpellTargets()
                             AddUnitTarget(m_caster, i);
                             break;
                         default:                            // apply to target in other case
+                            if (m_targets.getUnitTarget())
+                                AddUnitTarget(m_targets.getUnitTarget(), i);
                             break;
                     }
                     break;
@@ -765,9 +767,7 @@ void Spell::SelectSpellTargets()
                     break;
                 case SPELL_EFFECT_SKIN_PLAYER_CORPSE:
                     if (m_targets.getUnitTarget())
-                    {
                         AddUnitTarget(m_targets.getUnitTarget(), i);
-                    }
                     else if (m_targets.getCorpseTargetGUID())
                     {
                         Corpse *corpse = ObjectAccessor::GetCorpse(*m_caster,m_targets.getCorpseTargetGUID());

src/server/game/Spells/SpellMgr.h

@@ -709,13 +709,6 @@ enum SpellScriptTargetType
 
 #define MAX_SPELL_TARGET_TYPE 4
 
-struct SpellTargetEntry
-{
-    SpellTargetEntry(SpellScriptTargetType type_,uint32 targetEntry_) : type(type_), targetEntry(targetEntry_) {}
-    SpellScriptTargetType type;
-    uint32 targetEntry;
-};
-
 // coordinates for spells (accessed using SpellMgr functions)
 struct SpellTargetPosition
 {