Fortified Village crashes when building can't be placed

[GunChleoc]

Fortified Village crashes when building can't be placed. Reported on the forum.

https://wl.widelands.org/forum/topic/1938/?page=3#post-16646

To reproduce, add this to the starting conditions:

  place_building_in_region(player, "empire_colosseum", sf:region(1), {
     wares = {
        empire_bread = 8,
        fish = 4,
        meat = 4,
     },
  })

Backtrace:

terminate called after throwing an instance of 'ImageNotFound'
what(): Image not found: Coroutine

Program received signal SIGABRT, Aborted.
0x00007ffff515c5f8 in raise () from /usr/lib/libc.so.6
(gdb) bt
#0 0x00007ffff515c5f8 in raise () from /usr/lib/libc.so.6
#1 0x00007ffff515da7a in abort () from /usr/lib/libc.so.6
#2 0x00007ffff5a70add in __gnu_cxx::__verbose_terminate_handler () at /build/gcc/src/gcc-5.3.0/libstdc++-v3/libsupc++/vterminate.cc:95
#3 0x00007ffff5a6e936 in __cxxabiv1::__terminate (handler=<optimized out>)
at /build/gcc/src/gcc-5.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:47
#4 0x00007ffff5a6e981 in std::terminate () at /build/gcc/src/gcc-5.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:57
#5 0x00007ffff5a6ebe6 in __cxxabiv1::__cxa_rethrow () at /build/gcc/src/gcc-5.3.0/libstdc++-v3/libsupc++/eh_throw.cc:125
#6 0x0000000000f573fa in NetHost::run (this=0x7fffffffaf20) at /var/widelands/BZR/new_starting_conditions/src/network/nethost.cc:792
#7 0x0000000000cf206b in WLApplication::mainmenu_multiplayer (this=0x19b4260)
at /var/widelands/BZR/new_starting_conditions/src/wlapplication.cc:1197
#8 0x0000000000cf1484 in WLApplication::mainmenu (this=0x19b4260)
at /var/widelands/BZR/new_starting_conditions/src/wlapplication.cc:1017
#9 0x0000000000cedec0 in WLApplication::run (this=0x19b4260) at /var/widelands/BZR/new_starting_conditions/src/wlapplication.cc:449
#10 0x0000000000cec5b1 in main (argc=1, argv=0x7fffffffe818) at /var/widelands/BZR/new_starting_conditions/src/main.cc:51

[GunChleoc (gunchleoc)]

Fixed in build19-rc1.