[BUGFIX] Fixes invalid argument supplied for foreach

Classes/Service/FileOverrideService.php

@@ -139,8 +139,8 @@ class FileOverrideService extends FileBaseXMLService {
 
 		try {
 			SgLib::createDir($this->absPath, PATH_site);
-		} catch (\Exception $e) {
-			throw new LFException('failure.failure', 0, '(' . $e->getMessage() . ')');
+		} catch (\Exception $exception) {
+			throw new LFException('failure.failure', 0, '(' . $exception->getMessage() . ')');
 		}
 
 		parent::writeFile();
@@ -159,8 +159,8 @@ class FileOverrideService extends FileBaseXMLService {
 			Typo3Lib::writeLineToAdditionalConfiguration($addLine);
 			$GLOBALS['TYPO3_CONF_VARS']['SYS']['locallangXMLOverride'][$typo3ExtRelativeFilePath][0]
 				= $relativeOverrideFilePath;
-		} catch (\Exception $e) {
-			throw new LFException('failure.failure', 0, '(' . $e->getMessage() . ')');
+		} catch (\Exception $exception) {
+			throw new LFException('failure.failure', 0, '(' . $exception->getMessage() . ')');
 		}
 	}
 
@@ -171,11 +171,14 @@ class FileOverrideService extends FileBaseXMLService {
 	 * @return void
 	 */
 	public function deleteDuplicates() {
-		foreach ($this->localLang as $lang => $langData) {
-			foreach ($langData as $constKey => $constValue) {
-				$localLangData = $this->originalFileObject->getLocalLangData($lang);
+		foreach ($this->localLang as $language => $languageData) {
+			if (!is_array($languageData)) {
+				continue;
+			}
+			foreach ($languageData as $constKey => $constValue) {
+				$localLangData = $this->originalFileObject->getLocalLangData($language);
 				if (SgLib::strCmpIgnoreCRConvertLF($constValue, $localLangData[$constKey])) {
-					unset($this->localLang[$lang][$constKey]);
+					unset($this->localLang[$language][$constKey]);
 				}
 			}
 		}