Index: src/wp-admin/edit-form-comment.php
===================================================================
--- src/wp-admin/edit-form-comment.php	(revision 49090)
+++ src/wp-admin/edit-form-comment.php	(working copy)
@@ -4,12 +4,24 @@
  *
  * @package WordPress
  * @subpackage Administration
+ * 
+ * @global string $action
  */
 
+global $action;
+
 // Don't load directly.
 if ( ! defined( 'ABSPATH' ) ) {
 	die( '-1' );
 }
+
+if ( isset( $_REQUEST['c'] ) ) {
+    $comment_id = absint( $_REQUEST['c'] );
+    $comment    = get_comment( $comment_id );
+} else {
+    $comment = null;
+}
+
 ?>
 <form name="post" action="comment.php" method="post" id="post">
 <?php wp_nonce_field( 'update-comment_' . $comment->comment_ID ); ?>