[Bug] Observers were unable to hear sounds when observing

[Erik]

Just to note, I think that this patch will make it so that if a person is gibbed, people around them will see messages for ghosts bursting out of their body. Not a huge issue, actually pretty funny but yeah!

Oh! I totally did not notice that, you are right! "/mob/living/carbon/gib" checks for "for(var/mob/M in src)" and observers are technically mobs! Easy fix if needed.