Fix "Invalid argument for foreach()" in Html

Reported by Nikerabbit on IRC to happen on Preferences, although I
couldn't reproduce immediately.  The change should be helpful for this
kind of thing anyway.

diff --git a/includes/Html.php b/includes/Html.php
index 068a9bf..821822c 100644 (file)
--- a/includes/Html.php
+++ b/includes/Html.php
@@ -107,6 +107,7 @@ class Html {
         */
        public static function rawElement( $element, $attribs = array(), $contents = '' ) {
                global $wgHtml5, $wgWellFormedXml;
+               $attribs = (array)$attribs;
                # This is not required in HTML 5, but let's do it anyway, for
                # consistency and better compression.
                $element = strtolower( $element );