master 272693c: Make xwidget-event-handler more resilient

[Lars Ingebrigtsen]

branch: master
commit 272693c6fd2d1a6546d5362c30dc8c68247f44de
Author: Lars Ingebrigtsen <larsi@gnus.org>
Commit: Lars Ingebrigtsen <larsi@gnus.org>

    Make xwidget-event-handler more resilient
    
    * lisp/xwidget.el (xwidget-event-handler): Don't try to call the
    callback if it hasn't been defined.
---
 lisp/xwidget.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/xwidget.el b/lisp/xwidget.el
index 91d02e8..dc1ed2d 100644
--- a/lisp/xwidget.el
+++ b/lisp/xwidget.el
@@ -348,7 +348,8 @@ If N is omitted or nil, scroll backwards by one char."
       ((xwidget-event-type (nth 1 last-input-event))
        (xwidget (nth 2 last-input-event))
        (xwidget-callback (xwidget-get xwidget 'callback)))
-    (funcall xwidget-callback xwidget xwidget-event-type)))
+    (when xwidget-callback
+      (funcall xwidget-callback xwidget xwidget-event-type))))
 
 (defun xwidget-webkit-callback (xwidget xwidget-event-type)
   "Callback for xwidgets.