typo

diff --git a/src/protocols/dns/decode.c b/src/protocols/dns/decode.c
index 03e62e8dc3dc06799a4b9171acfb0516df05ac0d..290ca1f7b6799773bd2f696d6aa853b8e4f7afd8 100644 (file)
--- a/src/protocols/dns/decode.c
+++ b/src/protocols/dns/decode.c
@@ -251,7 +251,7 @@ static ssize_t decode_record(TALLOC_CTX *ctx, fr_pair_list_t *out, fr_dict_attr_
                if (slen < 0) return slen;
                if (!slen) break;
 
-               fr_assert(slen <= (p - end));
+               fr_assert(slen <= (end - p));
 
                p += slen;
        }