RG Live WotLK 3.3.5a

Before #17183 the explosion part of the spell was considering line of sight. The only problem was that it also checked if the caster (mage) himself is still in line of sight aswell (which is wrong, that's why it got fixed).
As long as we do not have any sources that living bomb explosion should indeed ignore line of sight, we will be restoring the original condition.