bpf, x86_32: Fix logic error in BPF_LDX zero-extension
When verifier_zext is true, we don't need to emit code for zero-extension. Fixes: 836256bf ("x32: bpf: eliminate zero extension code-gen") Signed-off-by:Wang YanQing <udknight@gmail.com> Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200423050637.GA4029@udknight
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