Avoid static analyzer warnings about potentially uninitialized values

gossipd/gossip.c

@@ -1518,7 +1518,7 @@ static void gossip_refresh_network(struct daemon *daemon)
 static struct io_plan *connection_in(struct io_conn *conn, struct daemon *daemon)
 {
 	struct wireaddr addr;
-	struct sockaddr_storage s;
+	struct sockaddr_storage s = {};
 	socklen_t len = sizeof(s);
 
 	if (getpeername(io_conn_fd(conn), (struct sockaddr *)&s, &len) != 0) {
@@ -1577,7 +1577,7 @@ static void setup_listeners(struct daemon *daemon, u16 portnum)
 	/* IPv6, since on Linux that (usually) binds to IPv4 too. */
 	fd1 = make_listen_fd(AF_INET6, &addr6, sizeof(addr6), true);
 	if (fd1 >= 0) {
-		struct sockaddr_in6 in6;
+		struct sockaddr_in6 in6 = {};
 
 		len = sizeof(in6);
 		if (getsockname(fd1, (void *)&in6, &len) != 0) {

gossipd/test/run-find_route.c

@@ -200,6 +200,7 @@ int main(void)
 	add_connection(rstate, &a, &b, 1, 1, 1);
 
 	route = find_route(tmpctx, rstate, &a, &b, 1000, riskfactor, 0.0, NULL, &fee);
+	assert(route);
 	assert(tal_count(route) == 1);
 	assert(fee == 0);
 
@@ -214,6 +215,7 @@ int main(void)
 	add_connection(rstate, &b, &c, 1, 1, 1);
 
 	route = find_route(tmpctx, rstate, &a, &c, 1000, riskfactor, 0.0, NULL, &fee);
+	assert(route);
 	assert(tal_count(route) == 2);
 	assert(fee == 1);
 
@@ -228,13 +230,15 @@ int main(void)
 
 	/* Will go via D for small amounts. */
 	route = find_route(tmpctx, rstate, &a, &c, 1000, riskfactor, 0.0, NULL, &fee);
+	assert(route);
 	assert(tal_count(route) == 2);
 	assert(channel_is_between(route[0], &a, &d));
 	assert(channel_is_between(route[1], &d, &c));
 	assert(fee == 0);
 
 	/* Will go via B for large amounts. */
 	route = find_route(tmpctx, rstate, &a, &c, 3000000, riskfactor, 0.0, NULL, &fee);
+	assert(route);
 	assert(tal_count(route) == 2);
 	assert(channel_is_between(route[0], &a, &b));
 	assert(channel_is_between(route[1], &b, &c));
@@ -243,6 +247,7 @@ int main(void)
 	/* Make B->C inactive, force it back via D */
 	get_connection(rstate, &b, &c)->active = false;
 	route = find_route(tmpctx, rstate, &a, &c, 3000000, riskfactor, 0.0, NULL, &fee);
+	assert(route);
 	assert(tal_count(route) == 2);
 	assert(channel_is_between(route[0], &a, &d));
 	assert(channel_is_between(route[1], &d, &c));