Fix E_NOTICE on line 76 if $_SERVER['HTTP_ACCEPT'] not set

diff --git a/includes/Metadata.php b/includes/Metadata.php
index 98a92ec..9964a3d 100644 (file)
--- a/includes/Metadata.php
+++ b/includes/Metadata.php
@@ -73,6 +73,10 @@ function wfCreativeCommonsRdf($article) {
 function rdfSetup() {
        global $wgOut, $_SERVER;
 
+       if( !isset($_SERVER['HTTP_ACCEPT']) ) {
+               $_SERVER['HTTP_ACCEPT'] = '';
+       }
+
        $rdftype = wfNegotiateType(wfAcceptToPrefs($_SERVER['HTTP_ACCEPT']), wfAcceptToPrefs(RDF_TYPE_PREFS));
 
        if (!$rdftype) {