add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/lib/bpf/libbpf.c
..
..
@@ -3479,6 +3479,9 @@
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 	int l = 0, r = obj->nr_programs - 1, m;
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 	struct bpf_program *prog;
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+	if (!obj->nr_programs)
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+		return NULL;
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+
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 	while (l < r) {
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 		m = l + (r - l + 1) / 2;
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 		prog = &obj->programs[m];