Prevent a notice if $_REQUEST['post_id'] is missing. Just use 0 in this case, which will be the same as using intval on an undefined value.
git-svn-id: https://develop.svn.wordpress.org/trunk@14987 602fd350-edb4-49c9-b593-d223f7449a82
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@ -1532,7 +1532,7 @@ SWFUpload.onload = function() {
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function media_upload_type_form($type = 'file', $errors = null, $id = null) {
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media_upload_header();
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$post_id = intval($_REQUEST['post_id']);
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$post_id = isset( $_REQUEST['post_id'] )? intval( $_REQUEST['post_id'] ) : 0;
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$form_action_url = admin_url("media-upload.php?type=$type&tab=type&post_id=$post_id");
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$form_action_url = apply_filters('media_upload_form_url', $form_action_url, $type);
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