(xmlsec-openssl) Fix build if OpenSSL 3.0 doesn't have engines (#829) #1318

Job	Run time
check-osx	11m 8s
check-msvc (mscng, unicode=yes with-dl=yes)	2m 40s
check-mingw (MINGW64, x86_64, --enable-unicode=yes)	19m 15s
check-msvc (mscng, unicode=no with-dl=no static=yes legacy-crypto=yes)	2m 51s
check-ubuntu	3m 30s
check-mingw (MINGW64, x86_64, --enable-static --enable-static-linking --enable-unicode=no --enabl...	12m 6s
check-ubuntu-openssl-111	1m 32s
check-msvc (mscrypto, unicode=yes with-dl=yes)	2m 1s
check-ubuntu (--enable-static --enable-static-linking --disable-openssl3-engines --without-nss --...	1m 9s
check-ubuntu-openssl-111 (--enable-static-linking=yes --without-nss --without-gcrypt --without-gn...	1m 12s
check-msvc (mscrypto, unicode=no with-dl=no static=yes legacy-crypto=yes)	1m 53s
check-ubuntu (--enable-static --enable-static-linking --enable-ftp --enable-md5 --enable-gost --e...	1m 2s
check-msvc (openssl-300, unicode=yes with-dl=yes)	6m 35s
check-msvc (openssl-300, unicode=no with-dl=no static=yes)	6m 45s
	1h 13m 39s

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