* window.el (window--dump-frame): Avoid error in --without-x builds.

1 files changed, 3 insertions, 1 deletions

diff --git a/lisp/window.el b/lisp/window.el
index 60f13e65c4e..21c9b925238 100644
--- a/lisp/window.el
+++ b/lisp/window.el
@@ -1102,7 +1102,9 @@ dumping to it."
                (frame-text-width frame) (frame-text-height frame)
                (frame-text-cols frame) (frame-text-lines frame))
        (format "tool: %s  scroll: %s  fringe: %s  border: %s  right: %s  bottom: %s\n\n"
-               (tool-bar-height frame t)
+               (if (fboundp 'tool-bar-height)
+                   (tool-bar-height frame t)
+                 "0")
                (frame-scroll-bar-width frame)
                (frame-fringe-width frame)
                (frame-border-width frame)