databases/xrootd: Mark BROKEN with openssl 3

Fails to build with:
error: no matching function for call to 'RSA_private_encrypt'

There are more recent version from the upstream which might support
OpenSSL 3 and later.

Approved by:	portmgr (blanket)
Sponsored by:	The FreeBSD Foundation

databases/xrootd/Makefile

@@ -41,7 +41,7 @@ KERBEROS5_LIB_DEPENDS=	libkrb5.so:security/krb5
 .include <bsd.port.pre.mk>
 
 .if ( ${OPSYS} == FreeBSD && ${OSVERSION} >= 1400092 && ${SSL_DEFAULT} == base ) || ${SSL_DEFAULT:Mopenssl3*}
-CXXFLAGS+=	-DOPENSSL_API_COMPAT=0x30000000L
+BROKEN=	fails to build with openssl 3 and later
 .endif
 
 post-patch: