Staging: rtl8723bs: os_de: if-else coding style issue

Coding style issues:
This patch clears the checkpatch.pl "braces {} are not necessary for
single statement blocks" and "else_should_follow_close_brace"
warnings.

Signed-off-by: John Oldman <john.oldman@polehill.co.uk>
Link: https://lore.kernel.org/r/20200515165646.12867-1-john.oldman@polehill.co.uk


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>