*Have user agent return '' rather than NULL

diff --git a/includes/ProxyTools.php b/includes/ProxyTools.php
index d957f38..cc0d340 100644 (file)
--- a/includes/ProxyTools.php
+++ b/includes/ProxyTools.php
@@ -62,7 +62,7 @@ function wfGetAgent() {
        if( isset( $set[$index] ) ) {
                return $set[$index];
        } else {
-               return null;
+               return '';
        }
 }