net: Fix potential uninitialized use of variables in net_bind()

If the list of addrinfos give to net_bind() contains only IPv4 or only
IPv6 addresses, then the ipv4 and ipv6 variables may be used uninitialized.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

diff --git a/ccan/net/net.c b/ccan/net/net.c
index eef28e2fd7100ed8f94179c8015c3cbc2dccd582..e84380fff96f27a885d05618a46b6d1d2d46cc2c 100644 (file)
--- a/ccan/net/net.c
+++ b/ccan/net/net.c
@@ -204,7 +204,8 @@ fail:
 
 int net_bind(const struct addrinfo *addrinfo, int fds[2])
 {
-       const struct addrinfo *ipv6, *ipv4;
+       const struct addrinfo *ipv6 = NULL;
+       const struct addrinfo *ipv4 = NULL;
        unsigned int num;
 
        if (addrinfo->ai_family == AF_INET)