[Freeciv-Dev] (PR#14818) gui-sdl science dialog crash

["Jason Short" <jdorje@xxxxxxxxxxxxxxxxxxxxx>]

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=14818 >

When I press F6 gui-sdl crashes.

#0  0x08162056 in popup_science_dialog (raise=true) at repodlgs.c:3220
3220          pLogo = adj_surf(GET_SURF(get_tech_sprite(tileset, 
get_player_research(game.player_ptr)->researching)));
(gdb) bt
#0  0x08162056 in popup_science_dialog (raise=true) at repodlgs.c:3220
#1  0x08143337 in research_callback (pButton=0x8f88a40) at mapctrl.c:208
#2  0x0812f70d in widget_pressed_action (pWidget=0x8f88a40) at 
gui_stuff.c:441
#3  0x0812d3a1 in main_key_down_handler (Key=
       {scancode = 72 'H', sym = SDLK_F6, mod = KMOD_NONE, unicode = 0},
     pData=0x0) at gui_main.c:222
#4  0x0812e3f1 in gui_event_loop (pData=0x0, loop_action=0,
     key_down_handler=0x812d361 <main_key_down_handler>,
     key_up_handler=0x812d5e4 <main_key_up_handler>,
     mouse_button_down_handler=0x812d5ff <main_mouse_button_down_handler>,
     mouse_button_up_handler=0x812d6b9 <main_mouse_button_up_handler>,
     mouse_motion_handler=0x812d747 <main_mouse_motion_handler>)
     at gui_main.c:735
#5  0x0812eb3f in ui_main (argc=1, argv=0xbf9c0d94) at gui_main.c:1005
#6  0x080501ce in main (argc=1, argv=0xbf9c0d94) at civclient.c:351