codecs : line encoder - fix crash when given format option is ""
codecs : line encoder - fix crash when given format option is ""

AlexAkulov/bitfan,vjeantet/bitfan,AlexAkulov/bitfan,veino/logfan,vjeantet/bitfan,AlexAkulov/bitfan,vjeantet/bitfan,vjeantet/bitfan,AlexAkulov/bitfan