[AD] small modesel thing

[Peter Wang <tjaden@xxxxxxxxxx>]

A small proposal for gfx_mode_select_ex.  If the card you pass into
gfx_mode_select_ex cannot be found in the driver list, I think it
should not crash.


Index: src/modesel.c
===================================================================
RCS file: /cvsroot/alleg/allegro/src/modesel.c,v
retrieving revision 1.9
diff -u -u -r1.9 modesel.c
--- src/modesel.c       2001/08/30 12:42:35     1.9
+++ src/modesel.c       2001/09/03 07:16:10
@@ -482,6 +482,8 @@
    }
 
    what_driver = i;
+   if (what_driver == driver_count)
+      what_driver = GFX_AUTODETECT;
 
    for (i=0; driver_list[what_driver].mode_list[i].w; i++) {
       if ((driver_list[what_driver].mode_list[i].w == *w) && (driver_list[what_driver].mode_list[i].h == *h)) {