Since `uci.get()` may return null or array values, we cannot blindly call split() on the result. Use the safe `L.toArray()` helper which is intended to deal with such situations. Also clean up whitespace while we're at. Fixes: #5080 Signed-off-by: Jo-Philipp Wich <jo@mein.io> (cherry picked from commit c4cdfcbe5121d5959dac1e18ed11b8611a86fb9e)