Bug fix: WSIO.c on_ws_callback should not update certs if wsio_instance->trusted_ca is NULL
Bug fix: WSIO.c on_ws_callback should not update certs if wsio_instance->trusted_ca is NULL

marcschier/azure-uamqp-c,marcschier/azure-uamqp-c,marcschier/azure-uamqp-c,marcschier/azure-uamqp-c