Avoid warnings from cus-start.el regarding scroll-bar-adjust-thumb-portion.

 lisp/cus-start.el (all): Avoid warnings about
 scroll-bar-adjust-thumb-portion on platforms where it is not
 defined.

2 files changed, 9 insertions, 0 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 4bd5ba43be6..5721ac24150 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,9 @@
+2013-01-13  Eli Zaretskii  <eliz@gnu.org>
+
+        * cus-start.el (all): Avoid warnings about
+        scroll-bar-adjust-thumb-portion on platforms where it is not
+        defined.
+
 2013-01-11  Jan Djärv  <jan.h.d@swipnet.se>
 
         * cus-start.el (all): Add scroll-bar-adjust-thumb-portion.
diff --git a/lisp/cus-start.el b/lisp/cus-start.el
index e1d4eb837ca..62e91fafcbf 100644
--- a/lisp/cus-start.el
+++ b/lisp/cus-start.el
@@ -576,6 +576,9 @@ since it could result in memory overflow and make Emacs crash."
                               (symbol-name symbol))
                        ;; Any function from fontset.c will do.
                        (fboundp 'new-fontset))
+                      ((equal "scroll-bar-adjust-thumb-portion"
+                              (symbol-name symbol))
+                       (featurep 'x))
                       (t t))))
     (if (not (boundp symbol))
         ;; If variables are removed from C code, give an error here!