use sizeof()

diff --git a/src/modules/rlm_mschap/rlm_mschap.c b/src/modules/rlm_mschap/rlm_mschap.c
index 8ba9173..3ce0c6d 100644 (file)
--- a/src/modules/rlm_mschap/rlm_mschap.c
+++ b/src/modules/rlm_mschap/rlm_mschap.c
@@ -243,7 +243,7 @@ static void auth_response(const char *username,
        /*
         *      The hexadecimal digits [A-F] MUST be uppercase.
         */
-       for (i = 0; i < 10; i++) {
+       for (i = 0; i < sizeof(digest); i++) {
                response[2 + (i * 2)] = hex[(digest[i] >> 4) & 0x0f];
                response[3 + (i * 2)] = hex[digest[i] & 0x0f];
        }