staging: rtl8723bs: fix braces for os_dep/mlme_linux.c

Add braces to both branches of an if block for consistency, and also
remove braces from a single line for loop. Fixes a checkpatch check
and warning, thus clearing this file of any brace check/warning
notices.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210209001153.165135-1-phil@philpotter.co.uk


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