Staging: rtl8192u: r8192U_core.c Converted some C99 comments to fix code-style errors

Converted some C99 warnings to fix the following error:

ERROR: trailing statements should be on next line

Signed-off-by: Chaitanya Hazarey <c@24.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>