[cling] test/Driver/CommandHistory.C: env -u also works on macOS.

[Axel-Naumann]

No description provided.

[phsft-bot]

Starting build on ROOT-performance-centos8-multicore/soversion, ROOT-ubuntu2204/nortcxxmod, ROOT-ubuntu2004/python3, mac12arm/cxx20, windows10/default
How to customize builds

[vgvassilev]

LGTM!

[phsft-bot]

Build failed on ROOT-performance-centos8-multicore/soversion.
Running on olbdw-01.cern.ch:/data/sftnight/workspace/root-pullrequests-build
See console output.

Errors:

• [2023-12-05T16:54:47.659Z] CMake Error at /data/sftnight/workspace/root-pullrequests-build/rootspi/jenkins/root-build.cmake:1126 (message):

[phsft-bot]

Build failed on ROOT-ubuntu2004/python3.
Running on root-ubuntu-2004-1.cern.ch:/home/sftnight/build/workspace/root-pullrequests-build
See console output.

Errors:

• [2023-12-05T17:02:16.394Z] CMake Error at /home/sftnight/build/workspace/root-pullrequests-build/rootspi/jenkins/root-build.cmake:1126 (message):

[phsft-bot]

Build failed on mac12arm/cxx20.
Running on 194.12.161.128:/Users/sftnight/build/workspace/root-pullrequests-build
See console output.

Errors:

• [2023-12-05T20:22:52.530Z] CMake Error at /Users/sftnight/build/workspace/root-pullrequests-build/rootspi/jenkins/root-build.cmake:1126 (message):