fixup! X509_add_cert(): prevent double free on X509_up_ref() failure #1486

Job	Run time
cygwin (windows-2019, win64, -DCMAKE_C_COMPILER=gcc --strict-warnings no-fips)	49m 53s
minimal (windows-2019)	12m 4s
minimal (windows-2022)	15m 45s
plain (windows-2019)	23m 52s
plain (windows-2022)	29m 47s
shared (windows-2019, win64, enable-fips)	37m 47s
shared (windows-2019, win32, --strict-warnings no-fips)	42m 5s
shared (windows-2022, win64, enable-fips)	40m 32s
shared (windows-2022, win32, --strict-warnings no-fips)	45m 15s
	4h 57m 0s

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