Fix spell dst execution time

src/server/game/Spells/Spell.cpp

@@ -833,7 +833,7 @@ void Spell::SelectSpellTargets()
         }
         else if (m_spellInfo->Speed > 0.0f)
         {
-            float dist = m_caster->GetDistance(*m_targets.GetDstPos());
+            float dist = m_caster->GetExactDist(*m_targets.GetDstPos());
             if (!m_spellInfo->HasAttribute(SPELL_ATTR9_SPECIAL_DELAY_CALCULATION))
                 m_delayMoment = uint64(std::floor(dist / m_spellInfo->Speed * 1000.0f));
             else