Core/SpellScripts: Added method to access m_spellValue in script

src/server/game/Spells/SpellScript.cpp

@@ -477,6 +477,11 @@ void SpellScript::SetCustomCastResultMessage(SpellCustomErrors result)
     m_spell->m_customError = result;
 }
 
+SpellValue const* SpellScript::GetSpellValue()
+{
+    return m_spell->m_spellValue;
+}
+
 bool AuraScript::_Validate(SpellInfo const* entry)
 {
     for (std::list<CheckAreaTargetHandler>::iterator itr = DoCheckAreaTarget.begin(); itr != DoCheckAreaTarget.end();  ++itr)