sequencer: use argv_array_pushf

This avoids a manual allocation calculation, and is shorter
to boot.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/sequencer.c b/sequencer.c
index 0a80c58d1194c3476dfd2861a98fbd08610597a3..2fea8243491b5dcabf525ef70c6205aba0e943f5 100644 (file)
--- a/sequencer.c
+++ b/sequencer.c
@@ -396,18 +396,13 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts,
 {
        struct argv_array array;
        int rc;
-       char *gpg_sign;
 
        argv_array_init(&array);
        argv_array_push(&array, "commit");
        argv_array_push(&array, "-n");
 
-       if (opts->gpg_sign) {
-               gpg_sign = xmalloc(3 + strlen(opts->gpg_sign));
-               sprintf(gpg_sign, "-S%s", opts->gpg_sign);
-               argv_array_push(&array, gpg_sign);
-               free(gpg_sign);
-       }
+       if (opts->gpg_sign)
+               argv_array_pushf(&array, "-S%s", opts->gpg_sign);
        if (opts->signoff)
                argv_array_push(&array, "-s");
        if (!opts->edit) {