[5094] Use error_code.value() to compare against boost::system_errors.

Comparing the error_code directly causes test issues on some OSes.
See asio_wrapper.h for the details.

src/lib/asiolink/tests/tcp_acceptor_unittest.cc

@@ -261,7 +261,7 @@ public:
     /// @param ec Error code.
     void acceptHandler(const boost::system::error_code& ec) {
         if (ec) {
-            if (ec != boost::asio::error::operation_aborted) {
+            if (ec.value() != boost::asio::error::operation_aborted) {
                 ADD_FAILURE() << "error occurred while accepting connection: "
                               << ec.message();
             } else {