function ww_get_all_widget() returns NULL with no widgets
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Running plugin version 1.5.2
Network multi-site install with Multilingual Press plugin.When saving a page in a website without any published widgets, the following error occurs:
Warning: Invalid argument supplied for foreach() in /wp-content/plugins/widget-wrangler/admin/widget-wrangler.admin.php on line 274
After some investigation, function ww_get_all_widgets() was returning null when it did not find any published widgets, instead of an empty array.
Recommend adding the following line into widget-wrangler.php within function ww_get_all_widgets():
$widgets = array();
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