picoev: fix for windows apps with veb in a thread, parallel to a webv… #425

Job	Run time
tests-sanitize-address-clang	2h 32m 57s
tests-sanitize-address-gcc	2h 16m 20s
tests-sanitize-address-msvc	3m 40s
tests-sanitize-memory-clang	2h 46m 54s
tests-sanitize-undefined-gcc	58m 25s
tests-sanitize-undefined-clang	44m 27s
	9h 22m 43s

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