ecore_con: switch from 1234 to AF_UNSPEC

there are systems where sa_family_t is a enum, so assigning 1234 will
lead to compililation errors on picky systems

src/tests/ecore_con/ecore_con_test_efl_net_ip_address.c

@@ -510,7 +510,7 @@ END_TEST
 START_TEST(ecore_test_efl_net_ip_address_ipv4_create_sockaddr_fail)
 {
    struct sockaddr_in addr = {
-     .sin_family = 1234,
+     .sin_family = AF_UNSPEC,
    };
    Eo *o;