Reset the 'quit' flag in virNetServerRun

To allow virNetServerRun/virNetServerQuit to be invoked multiple
times, we must reset the 'quit' flag in virNetServerRun
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

src/rpc/virnetserver.c

@@ -700,6 +700,8 @@ void virNetServerRun(virNetServerPtr srv)
         goto cleanup;
 #endif
 
+    srv->quit = 0;
+
     if (srv->autoShutdownTimeout &&
         (timerid = virEventAddTimeout(-1,
                                       virNetServerAutoShutdownTimer,