Comment 3 for bug 2061727

Test plan:

 - without this change:

/usr/lib/linux-tools-6.8.0-22/bpftool /usr/lib/linux-tools-6.8.0-25/bpftool gen skeleton /tmp/bpfcc-0.29.1+ds/libbpf-tools/.output/bashreadline.bpf.o > /tmp/bpfcc-0.29.1+ds/libbpf-tools/.output/bashreadline.skel.h
Usage: bpftool [OPTIONS] OBJECT { COMMAND | help }
       bpftool batch file FILE
       bpftool version

       OBJECT := { prog | map | link | cgroup | perf | net | feature | btf | gen | struct_ops | iter }
       OPTIONS := { {-j|--json} [{-p|--pretty}] | {-d|--debug} |
                    {-V|--version} }
make[2]: *** [Makefile:192: /tmp/bpfcc-0.29.1+ds/libbpf-tools/.output/bashreadline.skel.h] Error 255
make[2]: *** Deleting file '/tmp/bpfcc-0.29.1+ds/libbpf-tools/.output/bashreadline.skel.h'
make[2]: Leaving directory '/tmp/bpfcc-0.29.1+ds/libbpf-tools'

 - with this change applied:

100% tests passed, 0 tests failed out of 37

Total Test time (real) = 83.22 sec
make: Leaving directory '/tmp/autopkgtest.MOnsj0/tree/obj-x86_64-linux-gnu'
autopkgtest [06:43:12]: test command1: -----------------------]
autopkgtest [06:43:12]: test command1: - - - - - - - - - - results - - - - - - - - - -
command1 PASS
autopkgtest [06:43:12]: @@@@@@@@@@@@@@@@@@@@ summary
command1 PASS