#include <nng/nng.h>
#include <nng/supplemental/tls/tls.h>
void nng_tls_config_free(nng_tls_config *cfg);
The nng_tls_config_free()
decrements the reference count on the
TLS configuration object pointed to by cfg, and if the resulting
reference count is zero, then deallocates the configuration object.