staging: r8188eu: remove {} for single statement blocks

As per the Linux kernel coding-style guidelines, there is no need to
use {} for single statement blocks. Issue flagged by checkpatch script.

Signed-off-by: Deepak R Varma <drv@mailo.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/a50460e1507621b29a7901cc4ff9501b172417db.1666299151.git.drv@mailo.com


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