Compile problem with last rev update (1861)

[c0ncrete]

I believe they should look like this:

1468: group_id_caster = GetRaid()->GetID();
1480: group_id_caster = owner->GetRaid()->GetID();
1492: group_id_target = spell_target->GetRaid()->GetID();
1504: group_id_target = owner->GetRaid()->GetID();

On second thought, those return raid IDs. That's just how they were in the previous build. What lerxst2112 suggested looks more accurate since it's supposed to be group IDs.