Fix static calls to non-static getLanguage()

modules/core/www/frontpage_federation.php

@@ -96,7 +96,7 @@ foreach ($metaentries['remote'] as $key => $value) {
 
 $t = new \SimpleSAML\XHTML\Template($config, 'core:frontpage_federation.tpl.php');
 
-$language = \SimpleSAML\Locale\Language::getLanguage();
+$language = $t->getTranslator()->getLanguage()->getLanguage();
 $defaultLanguage = $config->getString('language.default', 'en');
 
 $translators = array(

modules/multiauth/www/selectsource.php

@@ -51,7 +51,7 @@ $globalConfig = \SimpleSAML\Configuration::getInstance();
 $t = new \SimpleSAML\XHTML\Template($globalConfig, 'multiauth:selectsource.php');
 
 $defaultLanguage = $globalConfig->getString('language.default', 'en');
-$language = \SimpleSAML\Locale\Language::getLanguage();
+$language = $t->getTranslator()->getLanguage()->getLanguage();
 
 $sources = $state[\SimpleSAML\Module\multiauth\Auth\Source\MultiAuth::SOURCESID];
 foreach ($sources as $key => $source){