[TASK] Introduce getter for $GLOBALS['LANG'] in ext:context_help

Resolves: #65369
Releases: master
Change-Id: Id488fb523c3b3dcc255f9c5d36af537abec267d0
Reviewed-on: http://review.typo3.org/37298


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>

typo3/sysext/context_help/Classes/ExtDirect/ContextHelpDataProvider.php

@@ -48,7 +48,7 @@ class ContextHelpDataProvider {
 	public function getTableContextHelp($table) {
 		$output = array();
 		if (!isset($GLOBALS['TCA_DESCR'][$table]['columns'])) {
-			$GLOBALS['LANG']->loadSingleTableDescription($table);
+			$this->getLanguageService()->loadSingleTableDescription($table);
 		}
 		if (is_array($GLOBALS['TCA_DESCR'][$table]) && is_array($GLOBALS['TCA_DESCR'][$table]['columns'])) {
 			$arrow = \TYPO3\CMS\Backend\Utility\IconUtility::getSpriteIcon('actions-view-go-forward');
@@ -76,4 +76,14 @@ class ContextHelpDataProvider {
 		return $output;
 	}
 
+	/**
+	 * Returns LanguageService
+	 *
+	 * @return \TYPO3\CMS\Lang\LanguageService
+	 */
+	protected function getLanguageService() {
+		return $GLOBALS['LANG'];
+	}
+
+
 }