- Lisp_Object event
- /* mouse events may have a symbolic prefix indicating the
- scrollbar or mode line */
- = AREF (key, SYMBOLP (AREF (key, 0)) && ASIZE (key) > 1 ? 1 : 0);
+ Lisp_Object event;
+
+ if (ASIZE (key) == 0)
+ return Qnil;
+
+ /* mouse events may have a symbolic prefix indicating the
+ scrollbar or mode line */
+ event = AREF (key, SYMBOLP (AREF (key, 0)) && ASIZE (key) > 1 ? 1 : 0);