r2011 - Crah on loading if there is a vehicle on depot

[z9999]

simutrans r2011

How to reproduce:
1. Make depot
2. Buy vehicle
3. Save game
4. Load the saved game

Result:
Crash.

Note:
This problem didn't happen in r2009.

Message: karte_t::laden():   blocks loaded
Message: karte_t::laden():   Setting view to 49,49
Message: karte_t::laden():   9 ways loaded
Message: convoi_t::laden_abschliessen():   state=INITIAL, next_stop_index=8
Message: automobil_t::setze_convoi():   05BA0CE0
FATAL ERROR: vector_tpl<T>::[]
index out of bounds: 1 not in 0..-1
Aborting program execution ...

[z9999]

Solved in r2014. Thank you.