Staging: rtl8723bs: core: rtw_cmd: Fixed four if-statement coding style issues

Fixed four cases where the if-statement coding style wasn't following
the guidelines.

Signed-off-by: Manuel Palenzuela <manuelpalenzuelamerino@gmail.com>
Link: https://lore.kernel.org/r/20201029120228.7029-1-manuelpalenzuelamerino@gmail.com


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