[PATCH 2/3] builtin/am: fold am_signoff() into am_append_signoff()

[Giuseppe Bilotta]

There are no more direct calls to am_signoff(), so we can fold its
logic  in am_append_signoff().

(This is done in a separate commit rather than in the previous one, to
make it easier to revert this specific change if additional calls are
ever introduced.)

Signed-off-by: Giuseppe Bilotta <giuseppe.bilo...@gmail.com>
---
 builtin/am.c | 33 +++++++++++++++------------------
 1 file changed, 15 insertions(+), 18 deletions(-)

diff --git a/builtin/am.c b/builtin/am.c
index d072027b5a..b29f885e41 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -1181,42 +1181,39 @@ static void NORETURN die_user_resolve(const struct 
am_state *state)
        exit(128);
 }
 
-static void am_signoff(struct strbuf *sb)
+/**
+ * Appends signoff to the "msg" field of the am_state.
+ */
+static void am_append_signoff(struct am_state *state)
 {
        char *cp;
        struct strbuf mine = STRBUF_INIT;
+       struct strbuf sb = STRBUF_INIT;
 
-       /* Does it end with our own sign-off? */
+       strbuf_attach(&sb, state->msg, state->msg_len, state->msg_len);
+
+       /* our sign-off */
        strbuf_addf(&mine, "\n%s%s\n",
                    sign_off_header,
                    fmt_name(getenv("GIT_COMMITTER_NAME"),
                             getenv("GIT_COMMITTER_EMAIL")));
-       if (mine.len < sb->len &&
-           !strcmp(mine.buf, sb->buf + sb->len - mine.len))
+
+       /* Does sb end with it already? */
+       if (mine.len < sb.len &&
+           !strcmp(mine.buf, sb.buf + sb.len - mine.len))
                goto exit; /* no need to duplicate */
 
        /* Does it have any Signed-off-by: in the text */
-       for (cp = sb->buf;
+       for (cp = sb.buf;
             cp && *cp && (cp = strstr(cp, sign_off_header)) != NULL;
             cp = strchr(cp, '\n')) {
-               if (sb->buf == cp || cp[-1] == '\n')
+               if (sb.buf == cp || cp[-1] == '\n')
                        break;
        }
 
-       strbuf_addstr(sb, mine.buf + !!cp);
+       strbuf_addstr(&sb, mine.buf + !!cp);
 exit:
        strbuf_release(&mine);
-}
-
-/**
- * Appends signoff to the "msg" field of the am_state.
- */
-static void am_append_signoff(struct am_state *state)
-{
-       struct strbuf sb = STRBUF_INIT;
-
-       strbuf_attach(&sb, state->msg, state->msg_len, state->msg_len);
-       am_signoff(&sb);
        state->msg = strbuf_detach(&sb, &state->msg_len);
 }
 
-- 
2.12.2.765.g2bf946761b