staging: wfx: Use flex_array_size() helper in memcpy()
Make use of the flex_array_size() helper to calculate the size of a flexible array member within an enclosing structure. This helper offers defense-in-depth against potential integer overflows, while at the same time makes it explicitly clear that we are dealing with a flexible array member. Signed-off-by:Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20200729233557.GA17693@embeddedorSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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