interface-ip.c: fix possible null pointer access if calloc() fails

diff --git a/interface-ip.c b/interface-ip.c
index 0610ffd..d5488ef 100644 (file)
--- a/interface-ip.c
+++ b/interface-ip.c
@@ -430,6 +430,9 @@ interface_add_dns_server(struct interface_ip_settings *ip, const char *str)
        struct dns_server *s;
 
        s = calloc(1, sizeof(*s));
        struct dns_server *s;
 
        s = calloc(1, sizeof(*s));

+       if (!s)
+               return;
+

        s->af = AF_INET;
        if (inet_pton(s->af, str, &s->addr.in))
                goto add;
        s->af = AF_INET;
        if (inet_pton(s->af, str, &s->addr.in))
                goto add;