[Patch] [CVS] rmail-spam-filter error when missing "From:" field

[Diane Murray]

When there is no "From:" field in a received message being checked by
the spam filter, a `(wrong-type-argument stringp nil)' error occurs.
The following patch corrects this.


        * mail/rmail-spam-filter.el (rmail-spam-filter): Only check white
        list if `message-sender' is non-nil.


*** rmail-spam-filter.el        16 Feb 2004 22:57:42 +0100      1.8
--- rmail-spam-filter.el        09 Nov 2004 22:38:46 +0100      
***************
*** 302,314 ****
  
          ;; Check white list, and likewise cause while loop
          ;;  bypass.
!         (if (let ((white-list rsf-white-list)
!                   (found nil))
!               (while (and (not found) white-list)
!                 (if (string-match (car white-list) message-sender)
!                     (setq found t)
!                   (setq white-list (cdr white-list))))
!               found)
              (setq exit-while-loop t
                    maybe-spam nil
                    this-is-a-spam-email nil))
--- 302,315 ----
  
          ;; Check white list, and likewise cause while loop
          ;;  bypass.
!         (if (and message-sender
!                  (let ((white-list rsf-white-list)
!                        (found nil))
!                    (while (and (not found) white-list)
!                      (if (string-match (car white-list) message-sender)
!                          (setq found t)
!                        (setq white-list (cdr white-list))))
!                    found))
              (setq exit-while-loop t
                    maybe-spam nil
                    this-is-a-spam-email nil))