Fix fail from r94473

Append to the string, don't replace it

diff --git a/includes/Xml.php b/includes/Xml.php
index f937003..c2fa819 100644 (file)
--- a/includes/Xml.php
+++ b/includes/Xml.php
@@ -794,7 +794,7 @@ class Xml {
                $s = Xml::openElement( 'table', $attribs );
 
                if ( is_array( $headers ) ) {
-                       $s = Xml::openElement( 'thead', $attribs );
+                       $s .= Xml::openElement( 'thead', $attribs );
 
                        foreach( $headers as $id => $header ) {
                                $attribs = array();
@@ -805,7 +805,7 @@ class Xml {
 
                                $s .= Xml::element( 'th', $attribs, $header );
                        }
-                       $s = Xml::closeElement( 'thead' );
+                       $s .= Xml::closeElement( 'thead' );
                }
 
                foreach( $rows as $id => $row ) {