fix commonlib include path

* lpsolve/lp_presolve.c: Here.
2 jobs for er/fixcommonlib in 2 seconds (queued for 1 second)
Name Stage Failure
failed
build-unstable Build
Running with gitlab-runner 13.3.1 (13.3.1)
on node8 cca9d49c
Preparing the "docker" executor
Using Docker executor with image registry.lrde.epita.fr/spot-debuild ...
Pulling docker image gitlab-runner-helper:13.3.1 ...
ERROR: Job failed: Error response from daemon: pull access denied for gitlab-runner-helper, repository does not exist or may require 'docker login': denied: requested access to the resource is denied (docker.go:136:1s)
failed
build-stable Build
Running with gitlab-runner 13.3.1 (13.3.1)
on node8 cca9d49c
Preparing the "docker" executor
Using Docker executor with image registry.lrde.epita.fr/spot-debuild:stable ...
Pulling docker image gitlab-runner-helper:13.3.1 ...
ERROR: Job failed: Error response from daemon: pull access denied for gitlab-runner-helper, repository does not exist or may require 'docker login': denied: requested access to the resource is denied (docker.go:136:1s)