random small size optimizations

1 files changed, 3 insertions, 5 deletions

diff --git a/coreutils/md5_sha1_sum.c b/coreutils/md5_sha1_sum.c
index 6fe1b0286..014ecefd0 100644
--- a/coreutils/md5_sha1_sum.c
+++ b/coreutils/md5_sha1_sum.c
@@ -18,11 +18,9 @@ typedef enum { HASH_SHA1, HASH_MD5 } hash_algo_t;
 static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
                                 unsigned hash_length)
 {
-        int len = 0;
-        char *hex_value = xmalloc((hash_length * 2) + 2);
-        while (hash_length--) {
-                len += sprintf(hex_value + len, "%02x", *hash_value++);
-        }
+        /* xzalloc zero-terminates */
+        char *hex_value = xzalloc((hash_length * 2) + 1);
+        bin2hex(hex_value, (char*)hash_value, hash_length);
         return hex_value;
 }