tweeper.php: make logXmlError() a static method

diff --git a/tweeper.php b/tweeper.php
index 1836a2a..817452b 100644 (file)
--- a/tweeper.php
+++ b/tweeper.php
@@ -164,7 +164,7 @@ class Tweeper {
   /**
    * Mimic the message from libxml.c::php_libxml_ctx_error_level()
    */
-  private function logXmlError($error) {
+  private static function logXmlError($error) {
     $output = "";
 
     switch ($error->level) {
@@ -293,7 +293,7 @@ class Tweeper {
     }
 
     foreach (libxml_get_errors() as $xml_error) {
-      $this->logXmlError($xml_error);
+      Tweeper::logXmlError($xml_error);
     }
     libxml_clear_errors();
     libxml_use_internal_errors($xml_errors_value);