Fixed printftext having no return

There is a difference. 
Before, on index:
<a href='XX' target='_blank'></a>

After:
<a href='XX' target='_blank'>56</a>

locale/localization.php

@@ -7,7 +7,7 @@ function printtext($key) {
 function printftext() {
     $argv = func_get_args();
     $key = array_shift($argv);
-    vprintf(TEXTS[$key], $argv);
+    return vprintf(TEXTS[$key], $argv);
 }
 
 // default to language "en"