[FIX] website: define languages variable outside of an 'if' as it is used...

[FIX] website: define languages variable outside of an 'if' as it is used below in the same template, leading to a crash due to the variable not always being defined.

addons/website/views/website_templates.xml

@@ -80,8 +80,8 @@
                 and main_object.website_meta_keywords or website_meta_keywords"/>
             <title><t t-esc="title"/></title>
 
+            <t t-set="languages" t-value="website.get_languages()"/>
             <t t-if="request.website_multilang">
-                <t t-set="languages" t-value="website.get_languages()"/>
                 <t t-foreach="languages" t-as="lg">
                     <t t-set="force_lang" t-value="lg[0] if lg[0] != website.default_lang_code else None"/>
                     <link rel="alternate" t-att-href="url_for(request.httprequest.path + '?' + keep_query(), lang=force_lang)" t-att-hreflang="lg[0].replace('_', '-').lower()" />