netserver: close clients before stopping all drivers

So far clients were closed when disposing the daemon, after the state
driver cleanup. This was leading to libvirtd crashing at shutdown due
to missing driver.

Moving the client close in virNetServerClose() fixes the problem.
Reviewed-by: NErik Skultety <eskultet@redhat.com>

src/rpc/virnetserver.c

@@ -774,10 +774,8 @@ void virNetServerDispose(void *obj)
         virObjectUnref(srv->programs[i]);
     VIR_FREE(srv->programs);
 
-    for (i = 0; i < srv->nclients; i++) {
-        virNetServerClientClose(srv->clients[i]);
+    for (i = 0; i < srv->nclients; i++)
         virObjectUnref(srv->clients[i]);
-    }
     VIR_FREE(srv->clients);
 
     VIR_FREE(srv->mdnsGroupName);
@@ -796,6 +794,9 @@ void virNetServerClose(virNetServerPtr srv)
     for (i = 0; i < srv->nservices; i++)
         virNetServerServiceClose(srv->services[i]);
 
+    for (i = 0; i < srv->nclients; i++)
+        virNetServerClientClose(srv->clients[i]);
+
     virObjectUnlock(srv);
 }