test: skip tests if socket_check_protocol_support() failed

Skip the tests if socket_check_protocol_support() failed, but do run
g_test_run() to keep TAP harness happy.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

tests/test-char.c

@@ -1365,7 +1365,8 @@ int main(int argc, char **argv)
     g_test_init(&argc, &argv, NULL);
 
     if (socket_check_protocol_support(&has_ipv4, &has_ipv6) < 0) {
-        return -1;
+        g_printerr("socket_check_protocol_support() failed\n");
+        goto end;
     }
 
     module_call_init(MODULE_INIT_QOM);
@@ -1465,5 +1466,6 @@ int main(int argc, char **argv)
     g_test_add_func("/char/hotswap", char_hotswap_test);
     g_test_add_func("/char/websocket", char_websock_test);
 
+end:
     return g_test_run();
 }

tests/test-io-channel-socket.c

@@ -566,7 +566,8 @@ int main(int argc, char **argv)
      * with either IPv4 or IPv6 disabled.
      */
     if (socket_check_protocol_support(&has_ipv4, &has_ipv6) < 0) {
-        return 1;
+        g_printerr("socket_check_protocol_support() failed\n");
+        goto end;
     }
 
     if (has_ipv4) {
@@ -595,5 +596,6 @@ int main(int argc, char **argv)
                     test_io_channel_unix_listen_cleanup);
 #endif /* _WIN32 */
 
+end:
     return g_test_run();
 }

tests/test-util-sockets.c

@@ -242,7 +242,8 @@ int main(int argc, char **argv)
      * with either IPv4 or IPv6 disabled.
      */
     if (socket_check_protocol_support(&has_ipv4, &has_ipv6) < 0) {
-        return 1;
+        g_printerr("socket_check_protocol_support() failed\n");
+        goto end;
     }
 
     if (has_ipv4) {
@@ -264,5 +265,6 @@ int main(int argc, char **argv)
                         test_socket_fd_pass_num_nocli);
     }
 
+end:
     return g_test_run();
 }