Merge branch 'Fix incorrect pruning for ARG_CONST_ALLOC_SIZE_OR_ZERO'

Kumar Kartikeya Dwivedi says:

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A fix for a missing mark_chain_precision call that leads to eager pruning and
loading of invalid programs when the more permissive case is in the straight
line exploration. Please see the commit log for details, and selftest for an
example.
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Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>