PHP notice for requests in the admin

[barryceelen]

This line is creating a php notice for me when doing unrelated requests in the admin:

Notice: Undefined index: account in myawesomefilepath/plugins/brightcove-video-connect-1.3/includes/admin/class-bc-admin-settings-page.php on line 20

The delete_source() function is called on every admin request via add_action( 'admin_init', array( $this, 'delete_source' ) );. It may be more suitable to add a specific action to this GET request, point it at admin-post.php and have add_action( 'admin_post_mycoolaction handle it.