(select-safe-coding-system): Cope if default-coding-system gives nil

which was then used in `min'.

lisp/ChangeLog

+2002-09-22  Richard M. Stallman  <rms@gnu.org>
+
+	* international/mule-cmds.el (select-safe-coding-system): Cope if
+	default-coding-system gives nil which was then used in `min'.
+
+	* mail/sendmail.el (sendmail-send-it): If user's buffer
+	is unibyte, make tembuf unibyte.
+
 2002-09-22  Kai Gro,b_(Bjohann  <grossjoh@ls6.informatik.uni-dortmund.de>
 
 	* net/tramp.el: Version 2.0.22 released.

lisp/international/mule-cmds.el

@@ -723,9 +723,10 @@ and TO is ignored."
       (let ((window-configuration (current-window-configuration)))
 	(save-excursion
 	  ;; Make sure the offending buffer is displayed.
-	  (when (and default-coding-system (not (stringp from)))
+	  (when (and (consp default-coding-system) (not (stringp from)))
 	    (pop-to-buffer bufname)
-	    (goto-char (apply 'min (mapcar #'(lambda (x) (car (cadr x)))
+	    ;; The `or' is because sometimes (car (cadr x)) is nil.
+	    (goto-char (apply 'min (mapcar #'(lambda (x) (or (car (cadr x)) (point-max)))
 					   default-coding-system))))
 	  ;; Then ask users to select one from CODINGS.
 	  (with-output-to-temp-buffer "*Warning*"