Revert signal-handling

Author: chansikpark

httplib.h

@@ -8618,11 +8618,7 @@ inline ClientImpl::ClientImpl(const std::string &host, int port,
                               const std::string &client_key_path)
     : host_(detail::escape_abstract_namespace_unix_domain(host)), port_(port),
       host_and_port_(detail::make_host_and_port_string(host_, port, is_ssl())),
-      client_cert_path_(client_cert_path), client_key_path_(client_key_path) {
-#ifndef _WIN32
-  signal(SIGPIPE, SIG_IGN);
-#endif
-}
+      client_cert_path_(client_cert_path), client_key_path_(client_key_path) {}
 
 inline ClientImpl::~ClientImpl() {
   // Wait until all the requests in flight are handled.