uclient: initialize *port for unknown address families

uclient_get_addr() returned early without writing *port when the
address family was neither AF_INET nor AF_INET6. Callers such as the
ucode binding's status() pass a pointer and immediately use the result,
so for an as-yet-unconnected client (zeroed local/remote_addr) they read
and report an uninitialized port value. Set *port to 0 in that case.

Assisted-by: Claude:claude-opus-4-8
Link: https://github.com/openwrt/uclient/pull/16
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/uclient.c b/uclient.c
index 915dc55..b9dbf9f 100644
--- a/uclient.c
+++ b/uclient.c
@@ -43,6 +43,8 @@ char *uclient_get_addr(char *dest, int *port, union uclient_addr *a)
 		portval = a->sin6.sin6_port;
 		break;
 	default:
+		if (port)
+			*port = 0;
 		return strcpy(dest, "Unknown");
 	}