Merge pull request #4 from AaronChen0/v2.1.12 #1

Job	Run time
vs2017 (windows-2016, NONE)	1s
vs2019 (windows-2019, NONE)	15m 5s
vs2019 (windows-2019, LIBRARY_TYPE_STATIC)	15m 32s
vs2019 (windows-2019, DISABLE_OPENSSL)	15m 8s
vs2019 (windows-2019, DISABLE_THREAD_SUPPORT)	15m 20s
vs2019 (windows-2019, DISABLE_DEBUG_MODE)	18m 52s
vs2019 (windows-2019, DISABLE_MM_REPLACEMENT)	18m 50s
vs2019 (windows-2019, DUNICODE)	15m 33s
vs2019 (windows-2019, TEST_EXPORT_SHARED)	11m 41s
vs2019 (windows-2019, TEST_EXPORT_STATIC)	12m 33s
	2h 18m 35s

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