staging: rtl8192e: Braces should be used on all arms of statement

Fixed a coding style issue by adding braces on all arms of an "if"
statement.

Signed-off-by: Eduard Vintila <eduard.vintila47@gmail.com>
Link: https://lore.kernel.org/r/20201109202016.79329-1-eduard.vintila47@gmail.com


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