free `ParsecRuntime::madness_comm_thread_es` even if MADWorld did not… #1557

Job	Run time
macos-latest: clang++ Release Threads	31m 4s
macos-latest: clang++ Release OneTBB	3m 13s
macos-latest: clang++ Release PaRSEC	5m 19s
ubuntu-20.04: /usr/bin/g++-9 Release Threads	37m 46s
ubuntu-20.04: /usr/bin/g++-9 Release OneTBB	2m 33s
ubuntu-20.04: /usr/bin/g++-9 Release PaRSEC	1m 49s
macos-latest: clang++ Debug Threads	39m 14s
macos-latest: clang++ Debug OneTBB	3m 47s
macos-latest: clang++ Debug PaRSEC	4m 5s
ubuntu-20.04: /usr/bin/g++-9 Debug Threads	43m 1s
ubuntu-20.04: /usr/bin/g++-9 Debug OneTBB	2m 35s
ubuntu-20.04: /usr/bin/g++-9 Debug PaRSEC	2m 43s
	2h 57m 9s

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