Index: wp-admin/includes/class-wp-links-list-table.php
===================================================================
--- wp-admin/includes/class-wp-links-list-table.php	(revision 26126)
+++ wp-admin/includes/class-wp-links-list-table.php	(working copy)
@@ -175,9 +175,18 @@
 	 					?><td <?php echo $attributes ?>><?php echo $rating; ?></td><?php
 						break;
 					default:
-						?>
-						<td <?php echo $attributes ?>><?php do_action( 'manage_link_custom_column', $column_name, $link->link_id ); ?></td>
-						<?php
+                                                echo "<td $attributes>";
+                                                /** 
+                                                 * Fires for each custom column that has been registered using 
+                                                 * the manage_link-manager_columns filter 
+                                                 * 
+                                                 * @since 3.0 
+                                                 * 
+                                                 * @param string $column_name   Name of the custom column 
+                                                 * @param int    $link->link_id Link id 
+                                                 */ 
+                                                do_action( 'manage_link_custom_column', $column_name, $link->link_id );
+                                                echo "</td>";
 						break;
 				}
 			}