commit 81cc926fb23add920716e0fd4796edb4cfb9a932
Author: Eddie Moya <eddie.moya@gmail.com>
Date:   Wed Dec 5 15:16:27 2012 -0600

    Fixing a type in the logic where taxonomy terms are added to the media library.

diff --git a/wp-admin/includes/class-wp-media-list-table.php b/wp-admin/includes/class-wp-media-list-table.php
index 41c5080..2c2bf7c 100644
--- a/wp-admin/includes/class-wp-media-list-table.php
+++ b/wp-admin/includes/class-wp-media-list-table.php
@@ -343,7 +343,7 @@ foreach ( $columns as $column_name => $column_display_name ) {
 	default:
 		if ( 'categories' == $column_name )
 			$taxonomy = 'category';
-		if ( 'tags' == $column_name )
+		elseif ( 'tags' == $column_name )
 			$taxonomy = 'post_tag';
 		elseif ( 0 === strpos( $column_name, 'taxonomy-' ) )
 			$taxonomy = substr( $column_name, 9 );