transport-helper.c: refactor set_helper_option()

diff --git a/bulk-checkin.c b/bulk-checkin.c
index 7cffc3a579e4a02c1422284092cef18cd4b7d059..4347f5c76aa72873eb5ccb090584428399f3159c 100644 (file)
--- a/bulk-checkin.c
+++ b/bulk-checkin.c
@@ -200,8 +200,8 @@ static int deflate_to_pack(struct bulk_checkin_state *state,
        if (seekback == (off_t) -1)
                return error("cannot find the current offset");
 
-       header_len = sprintf((char *)obuf, "%s %" PRIuMAX,
-                            typename(type), (uintmax_t)size) + 1;
+       header_len = xsnprintf((char *)obuf, sizeof(obuf), "%s %" PRIuMAX,
+                              typename(type), (uintmax_t)size) + 1;
        git_SHA1_Init(&ctx);
        git_SHA1_Update(&ctx, obuf, header_len);