fix for crash when falling back from shared memory to wired mode.

(the big_tile_pixmap is inaccessible while it is recreated, so
 do not try to access it)

diff --git a/src/sim/g_bigmap.c b/src/sim/g_bigmap.c
index d70225d5171c89f080ad1edaaec300958746a34e..2b2bb9dd04ca41d604162433f21a2ff714f1d5d8 100644 (file)
--- a/src/sim/g_bigmap.c
+++ b/src/sim/g_bigmap.c
@@ -310,9 +310,11 @@ WireDrawBeegMapRect(SimView *view, short x, short y, short w, short h)
 
       if (tile != *ha) {
        *ha = tile;
-       XCopyArea(view->x->dpy, view->x->big_tile_pixmap, view->pixmap,
+       if (view->x->big_tile_pixmap) {
+         XCopyArea(view->x->dpy, view->x->big_tile_pixmap, view->pixmap,
                  view->x->gc, 0, tile * 16, 16, 16,
                  col * 16, row * 16);
+       }
       }
     }
     map += mm;