Merge pull request #20 from alagoutte/seg_fault

Fix some seg fault with venet nic

FossilOrigin-Name: a60e92fca9b36dc75c966c7353df9a0fea0b2ca1a90c6c828917da293b3b5408

src/cw/sock_cmpaddr.c

@@ -47,6 +47,14 @@ int sock_cmpaddr(const struct sockaddr *addr1, const struct sockaddr *addr2,int
 	int p1,p2;
 	int slen;
 
+	if (!addr1){
+		return -1;
+	}
+
+	if (!addr2){
+		return -1;
+	}
+
 	if (addr1->sa_family != addr2->sa_family){
 		return addr1->sa_family - addr2->sa_family;
 	}