Index: comment.php
===================================================================
--- comment.php	(revision 46888)
+++ comment.php	(working copy)
@@ -22,16 +22,16 @@
 	$action = 'deletecomment';
 }
 
-if ( 'cdc' == $action ) {
+if ( 'cdc' === $action ) {
 	$action = 'delete';
-} elseif ( 'mac' == $action ) {
+} elseif ( 'mac' === $action ) {
 	$action = 'approve';
 }
 
 if ( isset( $_GET['dt'] ) ) {
-	if ( 'spam' == $_GET['dt'] ) {
+	if ( 'spam' === $_GET['dt'] ) {
 		$action = 'spam';
-	} elseif ( 'trash' == $_GET['dt'] ) {
+	} elseif ( 'trash' === $_GET['dt'] ) {
 		$action = 'trash';
 	}
 }
@@ -71,7 +71,7 @@
 			comment_footer_die( __( 'Sorry, you are not allowed to edit this comment.' ) );
 		}
 
-		if ( 'trash' == $comment->comment_approved ) {
+		if ( 'trash' === $comment->comment_approved ) {
 			comment_footer_die( __( 'This comment is in the Trash. Please move it out of the Trash if you want to edit it.' ) );
 		}
 
@@ -101,7 +101,7 @@
 		}
 
 		// No need to re-approve/re-trash/re-spam a comment.
-		if ( $action == str_replace( '1', 'approve', $comment->comment_approved ) ) {
+		if ( $action === str_replace( '1', 'approve', $comment->comment_approved ) ) {
 			wp_redirect( admin_url( 'edit-comments.php?same=' . $comment_id ) );
 			die();
 		}
@@ -109,7 +109,7 @@
 		require_once( ABSPATH . 'wp-admin/admin-header.php' );
 
 		$formaction    = $action . 'comment';
-		$nonce_action  = 'approve' == $action ? 'approve-comment_' : 'delete-comment_';
+		$nonce_action  = 'approve' === $action ? 'approve-comment_' : 'delete-comment_';
 		$nonce_action .= $comment_id;
 
 		?>
@@ -137,7 +137,7 @@
 				break;
 		}
 
-		if ( $comment->comment_approved != '0' ) { // if not unapproved
+		if ( '0' != $comment->comment_approved ) { // if not unapproved
 			$message = '';
 			switch ( $comment->comment_approved ) {
 				case '1':