mason/dhandler: Remove pointless `/' concatenation from `join_paths' call.

diff --git a/mason/dhandler b/mason/dhandler
index de0f0a9..bf700a8 100755 (executable)
--- a/mason/dhandler
+++ b/mason/dhandler
@@ -101,7 +101,7 @@ Failed to find &lsquo;<% $path |h %>&rsquo;.
 %   for my $d (@$dd) {
 %     my ($ddd, $fff, $iii) = listdir $real . "/" . $d->name;
 %     my $tn;
-%     if ($iii) { $tn = join_paths $path, $d->name . "/" . $iii->name; }
+%     if ($iii) { $tn = join_paths $path, $d->name, $iii->name; }
 %     else { $tn = undef; }
   <& .thumbnail, target => $d->name . "/", img => $tn,
                 caption => $m->interp->apply_escapes($d->name, "h"),