Fix PHP 5.3: used [] instead of array()

Author: mikehaertl

src/XfdfFile.php

@@ -51,7 +51,7 @@ public function __construct($data, $suffix = null, $prefix = null, $directory =
         rename($this->_fileName, $newName);
         $this->_fileName = $newName;
 
-        $fields = [];
+        $fields = array();
         foreach ($data as $key=>$value) {
             // Always convert to UTF-8
             if ($encoding!=='UTF-8') {