networkDestroy: Report error if network is inactive

This follows the same convention as domain drivers.

ChangeLog

@@ -1,3 +1,8 @@
+Fri May 29 10:13:55 EDT 2009 Cole Robinson <crobinso@redhat.com>
+
+	* src/network_driver.c: networkDestroy: Report error if network
+	is inactive
+
 Fri May 29 10:10:00 EDT 2009 Cole Robinson <crobinso@redhat.com>
 
 	* src/qemu_driver.c: qemu_driver: Fix another domain startup error

src/network_driver.c

@@ -1238,6 +1238,12 @@ static int networkDestroy(virNetworkPtr net) {
         goto cleanup;
     }
 
+    if (!virNetworkIsActive(network)) {
+        networkReportError(net->conn, NULL, net, VIR_ERR_INTERNAL_ERROR,
+                           "%s", _("network is not active"));
+        goto cleanup;
+    }
+
     ret = networkShutdownNetworkDaemon(net->conn, driver, network);
     if (!network->persistent) {
         virNetworkRemoveInactive(&driver->networks,