Fix regexp in functions_routing.incx.php

See #655.

I don't understand the code either (I don't even see
where this code path belongs to - do we have a
facitlity to show comments "from ... to"?), but
the current regexp is obviously wrong, and the
one suggested by @hannob is obviously
(syntactically) correct, so it should be no
problem to change that.

Fixes #655.

Signed-off-by: Thomas Hochstein <thh@inter.net>

docs/NEWS

@@ -1,6 +1,8 @@
 Version 2.3.5-beta1 ()
 ------------------------------------------------------------------------
 
+   * Fix: Regular expression in functions_routing.incx.php
+
    * Fix: Truncate extension of media items to 5 chars (which ist the
           max length of the corresponding database field).
           Thanks to @mmitch!

include/functions_routing.inc.php

@@ -78,7 +78,7 @@ function serveComments() {
             continue;
         }
 
-        if (preg_match('@^(last|f|t|from|to)[\s_-]*([\d-/ ]+)$@', strtolower(urldecode($v)), $m)) {
+        if (preg_match('@^(last|f|t|from|to)[\s_-]*([\d/ -]+)$@', strtolower(urldecode($v)), $m)) {
             if ($m[1] == 'last') {
                 $usetime = time() - ($m[2]*86400);
                 $serendipity['GET']['commentStartTime'] = $usetime;