Restore filesize behaviour in XML (didn't mean to remove it)

Author: ziadoz

src/Xml.php

@@ -40,6 +40,12 @@ public static function validate($filePath)
             throw new XmlException('XML file is not readable');
         }
 
+        // domdocument dies silently when given a big (1.7GB) file, though known to cope with 892Mb
+        // @todo: look at using xmlreader instead @see: https://gist.github.com/tentacode/5934634 for some examples
+        if (filesize($filePath) > 1000000000) { // 1Gb
+            return;
+        }
+
         libxml_use_internal_errors(true);
 
         set_error_handler(function ($errno, $errstr, $errfile, $errline, $errcontext) {