soccr: print errno if connect() failed

https://github.com/checkpoint-restore/criu/issues/557Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Acked-by: Adrian Reber <areber@redhat.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>

soccr/soccr.c

@@ -526,7 +526,7 @@ static int libsoccr_set_sk_data_noq(struct libsoccr_sk *sk,
 
 	if (connect(sk->fd, &sk->dst_addr->sa, addr_size) == -1 &&
 						errno != EINPROGRESS) {
-		loge("Can't connect inet socket back\n");
+		logerr("Can't connect inet socket back");
 		return -1;
 	}