[network-manager-applet] fix crash with rapid connect/disconnect (bgo #588298)

[Dan Williams <dcbw src gnome org>]

commit ba5e669582eba7c49f1dd5de17edbab7254c1cd8
Author: Dan Williams <dcbw redhat com>
Date:   Tue Jul 14 15:54:19 2009 -0400

    fix crash with rapid connect/disconnect (bgo #588298)

 src/applet.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/applet.c b/src/applet.c
index d35abcb..9cf9735 100644
--- a/src/applet.c
+++ b/src/applet.c
@@ -1040,6 +1040,9 @@ applet_find_active_connection_for_device (NMDevice *device,
 		service_name = nm_active_connection_get_service_name (active);
 		connection_path = nm_active_connection_get_connection (active);
 
+		if (!devices || !service_name || !connection_path)
+			continue;
+
 		if (!nm_g_ptr_array_contains (devices, device))
 			continue;