Core/Spells: Fix Vampiric Touch damage at dispel

sql/base/world_database.sql

@@ -17026,6 +17026,7 @@ INSERT INTO `spell_bonus_data` (`entry`,`direct_bonus`,`dot_bonus`,`ap_bonus`,`a
 (34433, 0.65, -1, -1, -1, 'Priest - Shadowfiend'),
 (585, 0.714, -1, -1, -1, 'Priest - Smite'),
 (34914, -1, 0.4, -1, -1, 'Priest - Vampiric Touch'),
+(64085, 1.2, -1, -1, -1, 'Priest - Vampiric Touch (Dispelled)'),
 (7001, -1, 0.3333, -1, -1, 'Priest - Lightwell Renew Rank 1'),
 (63675, 0, 0, 0, 0, 'Priest - Improved Devouring Plague'),
 (56131, 0, 0, 0, 0, 'Priest - Glyph of Dispel Magic'),

sql/updates/world/2011_05_12_09_world_spell_bonus_data.sql

@@ -0,0 +1,3 @@
+DELETE FROM `spell_bonus_data` WHERE `entry` = 64085;
+INSERT INTO `spell_bonus_data` VALUES
+(64085,1.2,-1,-1,-1,'Priest - Vampiric Touch (Dispelled)');

src/server/game/Spells/Auras/SpellAuraEffects.cpp

@@ -5989,7 +5989,7 @@ void AuraEffect::HandleAuraDummy(AuraApplication const * aurApp, uint8 mode, boo
                     {
                         if (AuraEffect const * aurEff = GetBase()->GetEffect(1))
                         {
-                            int32 damage = aurEff->GetAmount()*4;
+                            int32 damage = aurEff->GetAmount() * 8;
                             // backfire damage
                             target->CastCustomSpell(target, 64085, &damage, NULL, NULL, true, NULL, NULL, GetCasterGUID());
                         }