Update dayz_spaceInterrupt.sqf

Changed starts at line 87 and end at line 93.

There is currently an exploit which allows players to get into bases via locked doors. It works by simply double tapping 'w' to sprint with a weapon then pressing 'z' to go prone. You go straight through the door. This fix simply disables prone if you're within 3m of any locked door. @vbawol