In Windows, calling the connect function for a socket requires a valid
address. This causes the t_session6 test in the coap_new_client_session()
function in test_session.c to fail.
The fix replaces in6addr_any with in6addr_loopback, as in the adjacent
function call. This does not affect the functionality of the test.
As a result, the tests under Windows are completely successful.
raspopov
6f97006daa