staging: rtl8192e: add missing braces {}

Add missing braces to if/else statements to adhere to the
Linux kernel coding-style guidelines.
These issues were reported by checkpatch.pl

"CHECK: braces {} should be used on all arms of this statement"

Signed-off-by: Stephan Snyman <rooiratel@tinyglitch.net>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20230420133209.4661-1-rooiratel@tinyglitch.net


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