Staging: rtl8723bs: fixed a brace coding style

Fixed a coding style issue - unnecessary braces for single statement

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Link: https://lore.kernel.org/r/20210314120858.37951-1-42.hyeyoo@gmail.com


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