[FrameworkBundle] Convert null prefix to an empty string in translation:update command

chalasr · chalasr · commit 141e6791630c · 2016-10-08T12:05:32.000+02:00
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
@@ -119,7 +119,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $extractedCatalogue = new MessageCatalogue($input->getArgument('locale'));
         $output->text('Parsing templates');
         $extractor = $this->getContainer()->get('translation.extractor');
-        $extractor->setPrefix($input->getOption('prefix'));
+        $extractor->setPrefix($input->getOption('prefix') ?: '');
         foreach ($transPaths as $path) {
             $path .= 'views';
             if (is_dir($path)) {
