future: Disable -Wuninitialized on a particular memcpy
future: Disable -Wuninitialized on a particular memcpy

This memcpy can indeed copy uninitialized memory, but that is safe
since we know the destination is also uninitialized.

GCC 8 produces a warning in here, but GCC 9 and newer don't. Disable
the warning for now since we still support GCC 8.

Signed-off-by: Rafael Ávila de Espíndola <1975039f9046bf513b77c0c5639a0efc25f00e7f@scylladb.com>
Message-Id: <20200303170647.551304-1-1975039f9046bf513b77c0c5639a0efc25f00e7f@scylladb.com>

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