r8192U_wx.c: style: avoid multiple blank lines

fix checkpatch.pl check:

CHECK: Please don't use multiple blank lines
in drivers/staging/rtl8192u/r8192U_wx.c

Signed-off-by: Bruno Raoult <braoult@gmail.com>
Link: https://lore.kernel.org/r/2c1f2c668d299ce1895ce97dc7fb9a67d3723e63.1616748922.git.braoult@gmail.com


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