fix(Scripts/Item): Gnomish Death Ray. (#7062)

- Closes #5648

data/sql/updates/pending_db_world/rev_1626953516206751500.sql

@@ -0,0 +1,5 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1626953516206751500');
+
+DELETE FROM `spell_linked_spell` WHERE `spell_trigger` = 13278 AND `spell_effect` = 13493;
+INSERT INTO `spell_linked_spell` (`spell_trigger`,`spell_effect`,`type`,`comment`) VALUES
+(13278, 13493, 0, 'Gnomish Death Ray');

src/server/game/Spells/SpellMgr.cpp

@@ -7081,12 +7081,6 @@ void SpellMgr::LoadDbcDataCorrections()
         spellInfo->AttributesEx3 |= SPELL_ATTR3_ALLOW_AURA_WHILE_DEAD;
     });
 
-    // Gnomish Death Ray
-    ApplySpellFix({ 13278, 13280 }, [](SpellEntry* spellInfo)
-    {
-        spellInfo->EffectImplicitTargetA[0] = TARGET_UNIT_TARGET_ENEMY;
-    });
-
     // Stormchops
     ApplySpellFix({ 43730 }, [](SpellEntry* spellInfo)
     {

src/server/scripts/Spells/spell_item.cpp

@@ -2126,7 +2126,6 @@ public:
 // 13280 Gnomish Death Ray
 enum GnomishDeathRay
 {
-    SPELL_GNOMISH_DEATH_RAY_SELF = 13493,
     SPELL_GNOMISH_DEATH_RAY_TARGET  = 13279,
 };
 
@@ -2141,18 +2140,17 @@ public:
 
         bool Validate(SpellInfo const* /*spellInfo*/) override
         {
-            return ValidateSpellInfo({ SPELL_GNOMISH_DEATH_RAY_SELF, SPELL_GNOMISH_DEATH_RAY_TARGET });
+            return ValidateSpellInfo({ SPELL_GNOMISH_DEATH_RAY_TARGET });
         }
 
         void HandleDummy(SpellEffIndex /*effIndex*/)
         {
-            Unit* caster = GetCaster();
+            if (Unit* caster = GetCaster())
-            if (Unit* target = GetHitUnit())
             {
-                if (urand(0, 99) < 15)
+                if (Unit* target = ObjectAccessor::GetUnit(*caster, caster->GetGuidValue(UNIT_FIELD_CHANNEL_OBJECT)))
-                    caster->CastSpell(caster, SPELL_GNOMISH_DEATH_RAY_SELF, true, nullptr);    // failure
+                {
-                else
+                    caster->CastSpell(target, SPELL_GNOMISH_DEATH_RAY_TARGET, true);
-                    caster->CastSpell(target, SPELL_GNOMISH_DEATH_RAY_TARGET, true, nullptr);
+                }
             }
         }