sysutils/voucher: fix build with openssl 1

OpenSSL 1 calls EVP_PKEY_get_bits() EVP_PKEY_bits().
Add a compatibility stub to fix the build.

While here bump the portrevision, which we neglected to do in the previous
change.

sysutils/voucher/Makefile

@@ -2,7 +2,7 @@
 
 PORTNAME=	voucher
 PORTVERSION=	0.1
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	sysutils
 MASTER_SITES=	# empty
 DISTFILES=	# none

sysutils/voucher/files/voucher.c

@@ -128,6 +128,13 @@
 #include <openssl/err.h>
 #endif
 
+#if OPENSSL_VERSION_NUMBER < 0x30000000L
+int EVP_PKEY_get_bits(EVP_PKEY *key)
+{
+    return EVP_PKEY_bits(key);
+}
+#endif
+
 #ifdef DEBUG
 #define HELP "\n\
 voucher [-d] [-c cfg_file] -k public_key voucher\n\