Newly merged "reworked vehicle construction system" possibly hang program in SDL version.

[yusiwen]

Program hangs in vehicle::add_missing_frames

(gdb) where
#0 0x00000000009366a2 in tileray::advance (this=0x7fff3ae53ab0, num=51148312) at tileray.cpp:267
#1 0x0000000000953c72 in vehicle::coord_translate (this=0x30c6160, dir=270, reldx=51148312, reldy=0, dx=@0x7fff3ae53b04: 0, dy=@0x7fff3ae53b08: -51697440)

at vehicle.cpp:1074

#2 0x0000000000953d5b in vehicle::precalc_mounts (this=0x30c6160, idir=0, dir=270) at vehicle.cpp:1086
#3 0x0000000000951a0f in vehicle::install_part (this=0x30c6160, dx=51698080, dy=0, id=..., hp=-1, force=true) at vehicle.cpp:751
#4 0x000000000094d9ff in vehicle::add_missing_frames (this=0x30c6160) at vehicle.cpp:111
#5 0x000000000094d7f6 in vehicle::load (this=0x30c6160, stin=...) at vehicle.cpp:84
#6 0x000000000067f1bd in mapbuffer::unserialize (this=0xd2d420 , fin=...) at mapbuffer.cpp:410
#7 0x000000000067dd2c in mapbuffer::load (this=0xd2d420 ) at mapbuffer.cpp:248
#8 0x0000000000678c58 in main (argc=0, argv=0x7fff3ae54900) at main.cpp:87

[yusiwen]

ncurses version is also affected.

[ianestrachan]

#3500 should fix this.