Fix "Undefined property: DiffEngine::$seq" under HHVM in DairikiDiff.php

Bug: T116266
Change-Id: I94ed1ce946b4c3e757405167d6c4530a5863a220

diff --git a/includes/diff/DairikiDiff.php b/includes/diff/DairikiDiff.php
index 264c87f..7401992 100644 (file)
--- a/includes/diff/DairikiDiff.php
+++ b/includes/diff/DairikiDiff.php
@@ -296,9 +296,9 @@ class DiffEngine {
                        $this->xchanged = $this->ychanged = array();
                        $this->xv = $this->yv = array();
                        $this->xind = $this->yind = array();
-                       unset( $this->seq );
-                       unset( $this->in_seq );
-                       unset( $this->lcs );
+                       $this->seq = array();
+                       $this->in_seq = array();
+                       $this->lcs = 0;
 
                        // Skip leading common lines.
                        for ( $skip = 0; $skip < $n_from && $skip < $n_to; $skip++ ) {