tools/bpftool: Fix error handing in do_skeleton()
Fix pass 0 to PTR_ERR, also dump more err info using libbpf_strerror. Fixes: 5dc7a8b2 ("bpftool, selftests/bpf: Embed object file inside skeleton") Signed-off-by:YueHaibing <yuehaibing@huawei.com> Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Reviewed-by:
Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20200717123059.29624-1-yuehaibing@huawei.com
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