[0.11.16] Crash on attempt to remove station when none exist

[Malachite]

On 11.16, attempting to remove a train station from a schedule when no stations are on the schedule will cause a game crash. Reproducible with save provided. I vaguely remember this being an issue before, but a non-game crashing error message would be nice.

Screenshot: http://i.imgur.com/QFdmafD.png
Log: https://www.dropbox.com/s/8okh4ca704602 ... s.log?dl=0
Save: https://www.dropbox.com/s/ja9kucsqv0b1w ... 2.zip?dl=0

[kovarex]

Thanks for the report. It is fixed for 0.11.17 now.