Enhance fix of 0b81a300d9e7cf78b6bc11d8c870f57fa81fcdc4.

Ken Hornstein did the same fix for nmh. He showed me that I had missed
the second, similar, case. Thanks.

diff --git a/sbr/seq_add.c b/sbr/seq_add.c
index 7fa7558..fd18a11 100644 (file)
--- a/sbr/seq_add.c
+++ b/sbr/seq_add.c
@@ -66,7 +66,7 @@ seq_addsel(struct msgs *mp, char *cp, int public, int zero)
        ** If sequence is new, or zero flag is set, then first
        ** clear the bit for this sequence from all messages.
        */
-       if (new_seq || zero) {
+       if (mp->nummsg>0 && (new_seq || zero)) {
                for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++)
                        clear_sequence(mp, i, msgnum);
        }