silence compiler warning

diff --git a/lib/dns/spnego.c b/lib/dns/spnego.c
index 77a8c31e917a5de9b7a2eccbd7fcfb289d612c98..59b3cbe4bf7edc6c47489a01cc4fb54623284eb7 100644 (file)
--- a/lib/dns/spnego.c
+++ b/lib/dns/spnego.c
@@ -1229,7 +1229,7 @@ der_put_oid(unsigned char *p, size_t len,
        unsigned char *base = p;
        size_t n;
 
-       for (n = data->length - 1; n >= 2; --n) {
+       for (n = data->length - 1; n >= 2u; --n) {
                unsigned        u = data->components[n];
 
                if (len < 1U)