netlink-socket: Fix sign of error code.

Commit 8f20fd98db (netlink-socket: Work around upstream kernel Netlink
bug.) got the sign of the error code wrong, so that it reported e.g. -22
for EINVAL to nl_sock_recv__()'s caller, instead of 22.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>

diff --git a/lib/netlink-socket.c b/lib/netlink-socket.c
index 93757cf..2c3eadf 100644 (file)
--- a/lib/netlink-socket.c
+++ b/lib/netlink-socket.c
@@ -338,7 +338,7 @@ nl_sock_recv__(struct nl_sock *sock, struct ofpbuf *buf, bool wait)
         error = (retval < 0 ? errno
                  : retval == 0 ? ECONNRESET /* not possible? */
                  : nlmsghdr->nlmsg_len != UINT32_MAX ? 0
-                 : -retval);
+                 : retval);
     } while (error == EINTR);
     if (error) {
         if (error == ENOBUFS) {