Change x-label editing flag to be in the envelope.

Handle like In-Reply-To and References editing.  Change the flag
setting to be inside mutt_copy_header().

The resetting of the changed flag occurs explicitly in the imap and
maildir/mh sync_mailbox code.  It occurs for mbox in the
mx_update_tables() call in mx_sync_mailbox().

1 files changed, 3 insertions, 1 deletions

diff --git a/headers.c b/headers.c
index 9b60023c..e1a15d7f 100644
--- a/headers.c
+++ b/headers.c
@@ -267,7 +267,9 @@ static int label_message(CONTEXT *ctx, HEADER *hdr, char *new)
   if (hdr->env->x_label != NULL)
     label_ref_inc(ctx, hdr->env->x_label);
 
-  return hdr->changed = hdr->xlabel_changed = 1;
+  hdr->changed = 1;
+  hdr->env->changed |= MUTT_ENV_CHANGED_XLABEL;
+  return 1;
 }
 
 int mutt_label_message(HEADER *hdr)