Without these, coverity is annoyed that aren't checking for NULL in bench.c CID 1293335 -- found by coverity.
@@ -1979,6 +1979,8 @@ crypto_dh_t *
crypto_dh_dup(const crypto_dh_t *dh)
{
crypto_dh_t *dh_new = tor_malloc_zero(sizeof(crypto_dh_t));
+ tor_assert(dh);
+ tor_assert(dh->dh);
dh_new->dh = dh->dh;
DH_up_ref(dh->dh);
return dh_new;