[libvirt] [PATCH] Really don't crash if a connection closes early

[Jiri Denemark]

https://bugzilla.redhat.com/show_bug.cgi?id=1047577

When writing commit 173c291, I missed the fact virNetServerClientClose
unlocks the client object before actually clearing client->sock and thus
it is possible to hit a window when client->keepalive is NULL while
client->sock is not NULL. I was thinking client->sock == NULL was a
better check for a closed connection but apparently we have to go with
client->keepalive == NULL to actually fix the crash.

Signed-off-by: Jiri Denemark <jdenemar at redhat.com>
---
 src/rpc/virnetserverclient.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rpc/virnetserverclient.c b/src/rpc/virnetserverclient.c
index 7830b7f..52b4941 100644
--- a/src/rpc/virnetserverclient.c
+++ b/src/rpc/virnetserverclient.c
@@ -1546,7 +1546,7 @@ virNetServerClientStartKeepAlive(virNetServerClientPtr client)
     /* The connection might have been closed before we got here and thus the
      * keepalive object could have been removed too.
      */
-    if (!client->sock) {
+    if (!client->keepalive) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("connection not open"));
         goto cleanup;
-- 
1.8.5.2