do curl_clobal_init() and curl_global_cleanup() so valgrind is quiter
do curl_clobal_init() and curl_global_cleanup() so valgrind is quiter

kellyjf/yubi,Yubico/yubico-c-client,kellyjf/yubi,Yubico/yubico-c-client,Yubico/yubico-c-client