[nat] Fix compiler warning..
diff --git a/openbsc/src/nat/bsc_nat.c b/openbsc/src/nat/bsc_nat.c
index 8466876..588a9e2 100644
--- a/openbsc/src/nat/bsc_nat.c
+++ b/openbsc/src/nat/bsc_nat.c
@@ -423,7 +423,7 @@
 static int forward_sccp_to_msc(struct bsc_fd *bfd, struct msgb *msg)
 {
 	struct bsc_connection *bsc;
-	struct bsc_connection *found_bsc;
+	struct bsc_connection *found_bsc = NULL;
 	struct bsc_nat_parsed *parsed;
 	int rc = -1;