[W|0.0.254b] Rescue of dead/dying colonists breaks the game

[spelfrog]

if you rescue a colonists in the same moment as he dies, he will be picked up witch causes wired effects.

Steps to Reproduce:
video
http://youtu.be/Ou8IdcTT9Ww
text
1. shot one colonist down(so that the yellow exclamation mark show up).
2. put another colonist next KO colonist.
3. shoot with a 3th colonist at the KO colonist.
4. click with the colonist next to the KO colonist on rescue in the same moment as the bullet hits the KO colonist

Expected Results:
nothing

Actual Results:
-the sound disappear
-some of the entity textures disappear(ex: the food texture or the texture from some colonists)
-the marker for what is selected disappear
-esc will not work anymore

Note:
this works with raiders as well.