mkfs.f2fs: fix bad assignment of total_sectors for f2fs_configuration

wanted_total_sectors is introduced instead total_sectors,
so that, the initialize is a fault, drop it.

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
1 file changed