staging: r8188eu: remove NULL check before vfree
vfree can handle NULL pointer as its argument. According to coccinelle isnullfree check, remove NULL check before vfree operation. Signed-off-by:Dongliang Mu <mudongliangabcd@gmail.com> Link: https://lore.kernel.org/r/20220614133239.147076-1-dzm91@hust.edu.cnSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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