OC_Util::isSetLocaleWorking: fix typo
OC_Util::isSetLocaleWorking: fix typo

Signed-off-by: Naoto Kobayashi <bbcf30d44f1c0a82cdbcc4d7987be9f439109b3b@gmail.com>

nextcloud/server,nextcloud/server,nextcloud/server,nextcloud/server