Close more FDs because XRootd plays games in library init #4956

Job	Run time
git_checks	8s
format	31s
macos (macos-11, shared)	25m 43s
windows (win2019, shared, serial)	12m 32s
macos (macos-12, static)	5m 19s
CodeQL (cpp)	22m 50s
docker (ubuntu-bionic)	7m 51s
windows (win2019, shared, ompi)	17m 15s
macos (macos-12, shared)	3m 20s
windows (win2022, shared, serial)	11m 36s
linux_el8 (el8, icc, mpich)	23m 17s
windows (win2022, shared, ompi)	17m 34s
linux_ubuntu (ubuntu20.04, gcc8, shared, mpich)	14m 42s
linux_el8 (el8, oneapi, mpich)	22m 3s
windows (win2022, static, serial, windows-2022, vs2022)	12m 54s
linux_ubuntu (ubuntu20.04, gcc9, shared, mpich)	17m 17s
linux_ubuntu (ubuntu20.04, gcc10, shared, mpich)	16m 59s
linux_ubuntu (ubuntu20.04, gcc11, shared, mpich)	17m 0s
linux_ubuntu (ubuntu20.04, clang6, shared, mpich)	10m 45s
linux_ubuntu (ubuntu20.04, clang10, shared, mpich)	14m 42s
linux_ubuntu (ubuntu20.04, gcc8, ompi)	33m 33s
linux_ubuntu (ubuntu20.04, gcc8, serial)	9m 28s
linux_ubuntu (ubuntu20.04, clang6, ompi)	29m 13s
linux_ubuntu (ubuntu20.04, clang6, serial)	7m 50s
linux_ubuntu (ubuntu20.04, gcc8, static, ompi, build_only)	7m 31s
linux_ubuntu (ubuntu20.04, clang6, static, ompi, build_only)	4m 17s
linux_ubuntu (ubuntu20.04, gcc8, static, serial)	8m 17s
contract (examples)	2m 17s
contract (lammps)	4m 16s
contract (tau)	10m 49s
build_and_test	1s
	6h 31m 50s

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