squelch silly MSVC warning #68

Job	Run time
busted (luajit-openresty, ubuntu-latest)	27s
busted (luajit-openresty, windows-latest)	1m 40s
busted (luajit-openresty, macos-latest)	52s
busted (luajit-2.1.0-beta3, ubuntu-latest)	23s
busted (luajit-2.1.0-beta3, windows-latest)	1m 48s
busted (luajit-2.1.0-beta3, macos-latest)	50s
busted (luajit-git, ubuntu-latest)	21s
busted (luajit-git, windows-latest)	1m 58s
busted (luajit-git, macos-latest)	1m 8s
busted (5.4.6, ubuntu-latest)	24s
busted (5.4.6, windows-latest)	1m 32s
busted (5.4.6, macos-latest)	46s
busted (5.1.5, ubuntu-latest)	23s
busted (5.1.5, windows-latest)	1m 39s
busted (5.1.5, macos-latest)	41s
busted (5.3.6, ubuntu-latest)	27s
busted (5.3.6, windows-latest)	1m 22s
busted (5.3.6, macos-latest)	45s
finish	5s
publish	0s
	17m 31s

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