More php8 compat fixes

include/pear/Date/Span.php

@@ -150,7 +150,7 @@ class Date_Span
      * @see    set()
      * @access public
      */
-    function Date_Span($time = 0, $format = null)
+    function __construct($time = 0, $format = null)
     {
         $this->set($time, $format);
     }
@@ -1080,4 +1080,4 @@ class Date_Span
  * c-hanging-comment-ender-p: nil
  * End:
  */
-?>
+?>