Need to bail without error if no user so installer works.

diff --git a/includes/db/DatabasePostgres.php b/includes/db/DatabasePostgres.php
index e85cc87..eb15747 100644 (file)
--- a/includes/db/DatabasePostgres.php
+++ b/includes/db/DatabasePostgres.php
@@ -132,6 +132,9 @@ class DatabasePostgres extends Database {
 
                global $wgDBport;
 
+               if (!strlen($user)) { ## e.g. the class is being loaded  
+                       return;  
+               }
                $this->close();
                $this->mServer = $server;
                $this->mPort = $port = $wgDBport;