Fix two compilation errors that occur when Unix domain occurs an IPv6 are enabled

net/icmpv6/icmpv6_ping.c

@@ -275,7 +275,7 @@ static uint16_t ping_interrupt(FAR struct net_driver_s *dev, FAR void *conn,
           FAR struct icmpv6_echo_reply_s *reply = ICMPv6ECHOREPLY;
 
           nllvdbg("ECHO reply: id=%d seqno=%d\n",
-                  ntohs(reply->id), reply(reply->seqno));
+                  ntohs(reply->id), ntohs(reply->seqno));
 
           if (ntohs(reply->id) == pstate->png_id)
             {

net/socket/sendto.c

@@ -226,7 +226,7 @@ ssize_t psock_sendto(FAR struct socket *psock, FAR const void *buf,
 
   if (nsent < 0)
     {
-      ndbg("ERROR: Unix domain sendto() failed: %d\n", ret);
+      ndbg("ERROR: Unix domain sendto() failed: %ld\n", (long)nsent);
       err = -nsent;
       goto errout;
     }