rem: else
add: } else { if (which < 0 || which > 19) { g_print("Invalid tile image %d\n", which); return; }
context: gnibbles_copy_pixmap (GdkDrawable *drawable, gint which, gint x, gint y,		      gboolean big){	gint size = properties->tilesize * (big == TRUE ? 2 : 1);	GdkPixbuf *copy_buf;	if (big == TRUE)		copy_buf = bonus_pixmaps[which];	else		copy_buf = small_pixmaps[which];	gdk_draw_pixbuf (GDK_DRAWABLE (drawable),			   drawing_area->style->fg_gc[GTK_WIDGET_STATE (drawing_area)],			   copy_buf, 0, 0,			   x * properties->tilesize,			   y * properties->tilesize, size, size,			   GDK_RGB_DITHER_NORMAL, 0, 0);}