Fix long long error in findBuiltinType in v6.24

[sudo-panda]

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[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Build failed on ROOT-performance-centos8-multicore/cxx17. Running on olbdw-01.cern.ch:/data/sftnight/workspace/root-pullrequests-build See console output.

Failing tests:

• projectroot.runtutorials.tutorial_legacy_mlp_mlpHiggs
• projectroot.runtutorials.tutorial_legacy_rootenv
• projectroot.runtutorials.tutorial_legacy_mlp_mlpRegression
• projectroot.runtutorials.tutorial_spectrum_Deconvolution2_1

[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.

Failing tests:

• projectroot.roottest.root.io.filemerger.roottest_root_io_filemerger_execFileMerger

[phsft-bot]

Build failed on mac11/cxx14. Running on macphsft20.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build See console output.

Failing tests:

• projectroot.roottest.python.distrdf.roottest_python_distrdf_spark_test_inv_mass
• projectroot.bindings.pyroot.pythonizations.test.pyunittests_pyroot_pyz_rdataframe_makenumpy
• projectroot.bindings.pyroot.pythonizations.test.pyunittests_pyroot_pyz_rtensor