Initialize args as an array in wp_widget_rss_output

[fitztrev]

I just tried calling wp_widget_rss_ouput() without passing it any arguments (which should be OK because they're optional according to the function). However it resulted in this error:

Warning: extract() [function.extract]: First argument should be an array in /var/www/trunk/wp-includes/widgets.php on line 1060

Error occurs because extract() needs to be passed an array, not a null string.

[fitztrev]

Initialize $args as an array

[fitztrev]

Forgot to finish the ticket's summary...

[fitztrev]

without passing it any arguments

I should clarify. I passed the function the RSS feed url, but not any 'args', which are the ones that are optional.

[ryan]

(In [6861]) Default args to array. Props fitztrev. fixes #5866