(rmail-narrow-to-header): Don't end error message with a period.

diff --git a/lisp/mail/rmail.el b/lisp/mail/rmail.el
index bb719ea508b0596a405f8153e35edafe7337f101..39465bbc485972ff9468a153f94372bae7b0a800 100644 (file)
--- a/lisp/mail/rmail.el
+++ b/lisp/mail/rmail.el
@@ -2250,7 +2250,7 @@ or forward if N is negative."
       (widen)
       (goto-char start)
       (unless (search-forward "\n\n" end t)
-       (error "Invalid message format."))
+       (error "Invalid message format"))
       (narrow-to-region start (point)))))
 
 (defun rmail-message-recipients-p (msg recipients &optional primary-only)