XEmacs 21.2.33 "Melpomene".

[chise/xemacs-chise.git.1] / src / scrollbar-x.c

diff --git a/src/scrollbar-x.c b/src/scrollbar-x.c
index e06f598..554be5d 100644 (file)
--- a/src/scrollbar-x.c
+++ b/src/scrollbar-x.c
@@ -406,6 +406,9 @@ x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id,
     return;
 
   mirror = find_scrollbar_window_mirror (f, id);
+  if (!mirror)
+    return;
+  
   win = real_window (mirror, 1);
 
   if (NILP (win))
@@ -609,6 +612,9 @@ x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id,
     return;
 
   mirror = find_scrollbar_window_mirror (f, id);
+  if (!mirror)
+    return;
+  
   win = real_window (mirror, 1);
 
   if (NILP (win))