From b314120afdbab3d29885f47fc83bc55f43765968 Mon Sep 17 00:00:00 2001
From: Michael Tokarev <mjt@tls.msk.ru>
Date: Sat, 14 Sep 2013 13:11:36 +0400
Subject: [PATCH] iov: avoid "orig_len may be used unitialized" warning

Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit 2be178a475289286db80de5ddd7830e67e112bdd)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 util/iov.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/util/iov.c b/util/iov.c
index f705586..bb46c04 100644
--- a/util/iov.c
+++ b/util/iov.c
@@ -181,13 +181,11 @@ ssize_t iov_send_recv(int sockfd, struct iovec *iov, unsigned iov_cnt,
             assert(iov[niov].iov_len > tail);
             orig_len = iov[niov].iov_len;
             iov[niov++].iov_len = tail;
-        }
-
-        ret = do_send_recv(sockfd, iov, niov, do_send);
-
-        /* Undo the changes above before checking for errors */
-        if (tail) {
+            ret = do_send_recv(sockfd, iov, niov, do_send);
+            /* Undo the changes above before checking for errors */
             iov[niov-1].iov_len = orig_len;
+        } else {
+            ret = do_send_recv(sockfd, iov, niov, do_send);
         }
         if (offset) {
             iov[0].iov_base -= offset;