sldns_b64_ntop_calculate_size
if(targsize < sldns_b64_ntop_calculate_size(srclength))
size_t sldns_b64_ntop_calculate_size(size_t srcsize);
size_t sz = sldns_b64_ntop_calculate_size(num)-1;
if(targsize < sldns_b64_ntop_calculate_size(srclength))
size_t sldns_b64_ntop_calculate_size(size_t srcsize);
size_t sz = sldns_b64_ntop_calculate_size(num)-1;
qb64_expected_size = sldns_b64_ntop_calculate_size(