Improve feedback for the password page

If you have no password set, the password page will tell you as much
(instead of saying that it doesn't match).

wiki.pl

@@ -3093,27 +3093,31 @@ sub DoPassword {
   my $id = shift;
   print GetHeader('', T('Password')), $q->start_div({-class=>'content password'});
   print $q->p(T('Your password is saved in a cookie, if you have cookies enabled. Cookies may get lost if you connect from another machine, from another account, or using another software.'));
-  if (UserIsAdmin()) {
-    print $q->p(T('You are currently an administrator on this site.'));
-  } elsif (UserIsEditor()) {
-    print $q->p(T('You are currently an editor on this site.'));
+  if (not $AdminPass and not $EditPass) {
+    print $q->p(T('This site does not use admin or editor passwords.'));
   } else {
-    print $q->p(T('You are a normal user on this site.'));
-    if ($AdminPass or $EditPass) {
-      print $q->p(T('Your password does not match any of the administrator or editor passwords.'));
+    if (UserIsAdmin()) {
+      print $q->p(T('You are currently an administrator on this site.'));
+    } elsif (UserIsEditor()) {
+      print $q->p(T('You are currently an editor on this site.'));
+    } else {
+      print $q->p(T('You are a normal user on this site.'));
+      if (not GetParam('pwd')) {
+	print $q->p(T('You do not have a password set.'));
+      } else {
+	print $q->p(T('Your password does not match any of the administrator or editor passwords.'));
+      }
     }
-  }
-  if ($AdminPass or $EditPass) {
     print GetFormStart(undef, undef, 'password'),
       $q->p(GetHiddenValue('action', 'password'), T('Password:'), ' ',
-      $q->password_field(-name=>'pwd', -size=>20, -maxlength=>50),
-      $q->hidden(-name=>'id', -value=>$id),
-      $q->submit(-name=>'Save', -accesskey=>T('s'), -value=>T('Save'))), $q->end_form;
-  } else {
-    print $q->p(T('This site does not use admin or editor passwords.'));
+	    $q->password_field(-name=>'pwd', -size=>20, -maxlength=>50),
+	    $q->hidden(-name=>'id', -value=>$id),
+	    $q->submit(-name=>'Save', -accesskey=>T('s'), -value=>T('Save'))),
+      $q->end_form;
   }
   if ($id) {
-    print $q->p(ScriptLink('action=browse;id=' . UrlEncode($id) . '&time=' . time, T('Return to ' . NormalToFree($id))));
+    print $q->p(ScriptLink('action=browse;id=' . UrlEncode($id) . ';time=' . time,
+			   T('Return to ' . NormalToFree($id))));
   }
   print $q->end_div();
   PrintFooter();