Use appropriate message-narrow-* variant

In 0b81766 (notmuch: Use more specific message-narrow-to-* variant,
2020-05-10), I described the distinction between -head and -headers,
but I flipped around which was which!  -head is the one that narrows
based on newlines.

1 files changed, 1 insertions, 1 deletions

diff --git a/piem.el b/piem.el
index b764616..7b51d34 100644
--- a/piem.el
+++ b/piem.el
@@ -250,7 +250,7 @@ a one-patch series), COVER may be nil."
   (with-temp-buffer
     (insert-file-contents (or cover patches))
     (let ((info (save-restriction
-                  (message-narrow-to-headers)
+                  (message-narrow-to-head)
                   (list :date (message-fetch-field "date")
                         :from (message-fetch-field "from")
                         :subject (message-fetch-field "subject")))))