[wp-trac] [WordPress Trac] #21614: wp_mime_type_icon PHP notice fixes

[WordPress Trac]

#21614: wp_mime_type_icon PHP notice fixes
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 Reporter:  sc0ttkclark   |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Media         |    Version:  3.4.1
 Severity:  trivial       |   Keywords:  has-patch dev-feedback
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 wp_mime_type_icon ends up sending to the 'wp_mime_type_icon' filter:
 $icon, $mime, and $post_id

 Based on the PHP, it's set in such a way that PHP notices could be
 generated for variables don't exist.

 I've attached my patch that should resolve those potential notices.

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Ticket URL: <http://core.trac.wordpress.org/ticket/21614>
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