[PATCH 02/34] am: release strbuf on error return in hg_patch_to_mail()

[Rene Scharfe <l.s.r@web.de>]

Signed-off-by: Rene Scharfe <l.s.r@web.de>
---
 builtin/am.c | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/builtin/am.c b/builtin/am.c
index 3c50b03faa..3d38b3fe9f 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -881,75 +881,84 @@ static int split_mail_stgit_series(struct am_state *state, const char **paths,
 static int hg_patch_to_mail(FILE *out, FILE *in, int keep_cr)
 {
 	struct strbuf sb = STRBUF_INIT;
+	int rc = 0;
 
 	while (!strbuf_getline_lf(&sb, in)) {
 		const char *str;
 
 		if (skip_prefix(sb.buf, "# User ", &str))
 			fprintf(out, "From: %s\n", str);
 		else if (skip_prefix(sb.buf, "# Date ", &str)) {
 			timestamp_t timestamp;
 			long tz, tz2;
 			char *end;
 
 			errno = 0;
 			timestamp = parse_timestamp(str, &end, 10);
-			if (errno)
-				return error(_("invalid timestamp"));
+			if (errno) {
+				rc = error(_("invalid timestamp"));
+				goto exit;
+			}
 
-			if (!skip_prefix(end, " ", &str))
-				return error(_("invalid Date line"));
+			if (!skip_prefix(end, " ", &str)) {
+				rc = error(_("invalid Date line"));
+				goto exit;
+			}
 
 			errno = 0;
 			tz = strtol(str, &end, 10);
-			if (errno)
-				return error(_("invalid timezone offset"));
+			if (errno) {
+				rc = error(_("invalid timezone offset"));
+				goto exit;
+			}
 
-			if (*end)
-				return error(_("invalid Date line"));
+			if (*end) {
+				rc = error(_("invalid Date line"));
+				goto exit;
+			}
 
 			/*
 			 * mercurial's timezone is in seconds west of UTC,
 			 * however git's timezone is in hours + minutes east of
 			 * UTC. Convert it.
 			 */
 			tz2 = labs(tz) / 3600 * 100 + labs(tz) % 3600 / 60;
 			if (tz > 0)
 				tz2 = -tz2;
 
 			fprintf(out, "Date: %s\n", show_date(timestamp, tz2, DATE_MODE(RFC2822)));
 		} else if (starts_with(sb.buf, "# ")) {
 			continue;
 		} else {
 			fprintf(out, "\n%s\n", sb.buf);
 			break;
 		}
 	}
 
 	strbuf_reset(&sb);
 	while (strbuf_fread(&sb, 8192, in) > 0) {
 		fwrite(sb.buf, 1, sb.len, out);
 		strbuf_reset(&sb);
 	}
-
+exit:
 	strbuf_release(&sb);
-	return 0;
+	return rc;
 }
 
 /**
  * Splits a list of files/directories into individual email patches. Each path
  * in `paths` must be a file/directory that is formatted according to
  * `patch_format`.
  *
  * Once split out, the individual email patches will be stored in the state
  * directory, with each patch's filename being its index, padded to state->prec
  * digits.
  *
  * state->cur will be set to the index of the first mail, and state->last will
  * be set to the index of the last mail.
  *
  * Set keep_cr to 0 to convert all lines ending with \r\n to end with \n, 1
  * to disable this behavior, -1 to use the default configured setting.
  *
  * Returns 0 on success, -1 on failure.
  */
-- 
2.14.1