Version: 34.11 - Fresh Installation
Made with Fedora Linux 32bit

This save shows how a dead dwarf will be assigned to unpathable coffins.
You can place a coffin anywhere, and the dead dwarf will be assigned to it
(regardless if the corpse/coffin is actually pathable)

Steps to reproduce
1) Observe that GraniteFort is completely isolated from the outside world
2) Observe that there are corpses in the outside area
3) Build coffins anywhere desired (behind a sealing bridge, behind a door, inside GraniteFort, outside GraniteFort

The dwarf corpses will be assigned to the coffins, regardless if they are accessible.

Hotkey F1) GraniteFort (sealed fort)
Hotkey F2) Dwarf Corpses (complements of a weremammoth)
Hotkey F3) Testing area for coffins (the lever for sealing bridge is also here)

I appreciate the help with the bugfix.
This bug can make coffins useless if you have split-areas or competing forts.
Would like to give the dwarves something to look forward to after death.

Thanks