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util/guest-random: Fix size arg to tail memcpy
We know that in the body of this if statement i is less than len, so we really should be copying len - i bytes not i - len bytes. Fix this typo. Fixes: 8d8404f ("util: Add qemu_guest_getrandom and associated routines") Signed-off-by: Mark Nelson <mdnelson8@gmail.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20210709120600.11080-1-mdnelson8@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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