Fix the scrollbar handling for insanely huge menus

The handling of the scrollbar for insanely huge menus was broken,
causing it to disappear off the bottom of the menu window.

diff --git a/com32/menu/menumain.c b/com32/menu/menumain.c
index d563198..2bbbc4f 100644 (file)
--- a/com32/menu/menumain.c
+++ b/com32/menu/menumain.c
@@ -297,10 +297,9 @@ draw_menu(int sel, int top, int edit_line)
   int tabmsg_len;
 
   if ( cm->nentries > MENU_ROWS ) {
-    int sblen = MENU_ROWS*MENU_ROWS/cm->nentries;
+    int sblen = max(MENU_ROWS*MENU_ROWS/cm->nentries, 1);
     sbtop = (MENU_ROWS-sblen+1)*top/(cm->nentries-MENU_ROWS+1);
-    sbbot = max(sbtop, sbtop+sblen-1);
-
+    sbbot = sbtop+sblen-1;
     sbtop += 4;  sbbot += 4;   /* Starting row of scrollbar */
   }