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[libvirt] [PATCH] admin_server: Avoid accessing unallocated memory

In 68b726b93c11cc90 we tried to fix a mem leak. However, it
wasn't done quite well. Problem is, virNetDaemonGetServers() may
fail in which case virObjectListFreeCount() would be called with
-1 objects to free. But the number of elements is taken in
unsigned rather than signed integer.

Signed-off-by: Michal Privoznik <mprivozn redhat com>

Pushed under trivial rule.

 daemon/admin_server.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/daemon/admin_server.c b/daemon/admin_server.c
index 85cec46..1d30ea5 100644
--- a/daemon/admin_server.c
+++ b/daemon/admin_server.c
@@ -54,7 +54,8 @@ adminConnectListServers(virNetDaemonPtr dmn,
         srvs = NULL;
-    virObjectListFreeCount(srvs, ret);
+    if (ret > 0)
+        virObjectListFreeCount(srvs, ret);
     return ret;

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