[network-manager-applet] Fix a crash

[Dan Winship <danw src gnome org>]

commit c89ff1af8dfa112deda8e9f4677f27a875ec67ec
Author: Dan Winship <danw gnome org>
Date:   Wed May 2 13:20:35 2012 -0400

    Fix a crash
    
    nm_client_get_devices() returns NULL, not a 0-length array, if there
    are no devices.
    
    https://bugzilla.redhat.com/show_bug.cgi?id=815440

 src/libnm-gtk/nm-wireless-dialog.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/libnm-gtk/nm-wireless-dialog.c b/src/libnm-gtk/nm-wireless-dialog.c
index 7c77515..73feb81 100644
--- a/src/libnm-gtk/nm-wireless-dialog.c
+++ b/src/libnm-gtk/nm-wireless-dialog.c
@@ -643,7 +643,7 @@ device_combo_init (NMAWirelessDialog *self, NMDevice *device)
 		num_added++;
 	} else {
 		devices = nm_client_get_devices (priv->client);
-		if (devices->len == 0)
+		if (!devices)
 			return FALSE;
 
 		for (i = 0; devices && (i < devices->len); i++) {