fix warning when saving plugins with 0 plugins enabled (closes #542)

diff --git a/classes/pref/prefs.php b/classes/pref/prefs.php
index eb84bde997f6ecb708ded3b573faad85cdd5fbbf..810b1e164ad41f87cfbe8b4d6dbc12b15e0eb175 100644 (file)
--- a/classes/pref/prefs.php
+++ b/classes/pref/prefs.php
@@ -824,7 +824,10 @@ class Pref_Prefs extends Handler_Protected {
        }
 
        function setplugins() {
-               $plugins = join(",", $_REQUEST["plugins"]);
+               if (is_array($_REQUEST["plugins"]))
+                       $plugins = join(",", $_REQUEST["plugins"]);
+               else
+                       $plugins = "";
 
                set_pref($this->link, "_ENABLED_PLUGINS", $plugins);
        }