staging: dgnc: Fix braces {} are not necessary for single statement blocks

This commit fixes the following checkpath warning in dgnc_neo.c file:
'braces {} are not necessary for single statement blocks'

Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>