Merge pull request #6389 from BOINC/dpa_web32

web: fix a couple of PHP warnings

Author: AenBleidd

html/user/forum_forum.php

@@ -272,9 +272,11 @@ function show_forum_threads($forum, $start, $sort_style, $user, $subs) {
 $action = get_str('action', true);
 
 if ($action == 'subscribe') {
+    $user = get_logged_in_user();
     BoincSubscription::replace($user->id, -$id);
     forum_page($forum, $user, 'You are now subscribed to this forum.');
 } else if ($action == 'unsubscribe') {
+    $user = get_logged_in_user();
     BoincSubscription::delete($user->id, -$id);
     forum_page($forum, $user, 'You are now unsubscribed from this forum.');
 } else {

html/user/weak_auth.php

@@ -27,6 +27,7 @@
 
 // strip http://
 //
+$master_url = master_url();
 $idx = strpos($master_url, '://');
 if ($idx) {
     $url = substr($master_url, $idx+strlen('://'));