libcontainer/seccomp/patchbpf: fix test wrt 32-bit

This is a temporary fix for the following issue when trying to compile for i386:

> # github.com/opencontainers/runc/libcontainer/seccomp/patchbpf [github.com/opencontainers/runc/libcontainer/seccomp/patchbpf.test]
> libcontainer/seccomp/patchbpf/enosys_linux_test.go:180:20: constant 3735928559 overflows int
> libcontainer/seccomp/patchbpf/enosys_linux_test.go:204:19: constant 3735928559 overflows int
> libcontainer/seccomp/patchbpf/enosys_linux_test.go:227:25: constant 3735928559 overflows int

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

libcontainer/seccomp/patchbpf/enosys_linux_test.go

@@ -46,7 +46,7 @@ func mockSyscallPayload(t *testing.T, sysno libseccomp.ScmpSyscall, arch nativeA
 
 // retFallthrough is returned by the mockFilter. If a the mock filter returns
 // this value, it indicates "fallthrough to libseccomp-generated filter".
-const retFallthrough uint32 = 0xDEADBEEF
+const retFallthrough uint32 = 0xBADBEEF
 
 // mockFilter returns a BPF VM that contains a mock filter with an -ENOSYS
 // stub. If the filter returns retFallthrough, the stub filter has permitted