Fix failing test.

core/Unzip/PclZip.php

@@ -76,8 +76,8 @@ class PclZip implements UncompressInterface
             PCLZIP_OPT_PATH, $pathExtracted,
             PCLZIP_OPT_STOP_ON_ERROR,
             PCLZIP_OPT_REPLACE_NEWER,
-            PCLZIP_CB_PRE_EXTRACT, function($p_event, &$p_header) {
-                return strncmp($p_header['filename'], '$pathExtracted', strlen('$pathExtracted')) ? 0 : 1;
+            PCLZIP_CB_PRE_EXTRACT, function($p_event, &$p_header) use ($pathExtracted) {
+                return strncmp($p_header['filename'], $pathExtracted, strlen($pathExtracted)) ? 0 : 1;
             }
         );
     }