classinffos: fix PHP warning

public_html/deployment/classes/classinfos.class.php

@@ -203,7 +203,7 @@ class classinfos {
         
         $source_code=file_get_contents($this->oRefClass->getFileName());
         
-        $sHtml.='<div class="sourcecode">';
+        $sHtml='<div class="sourcecode">';
         if ($sMode=="html"){
             $sHtml.='<h2 id="source">Source</h2>';
         }