Staging: rtl8192u: r8192U_core.c Converted a C99 comment to fix code-style error

Converted a C99 comment 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>