p5-Crypt-OpenSSL-RSA: don't rely on libcrypto returning static buffers

Upstream is currently in the painful process of adapting their code to
OpenSSL 3.0. This diff clashes with those efforts. I'll upstram a version
once the dust will have settled.

security/p5-Crypt-OpenSSL-RSA/Makefile

@@ -1,6 +1,7 @@
 COMMENT =	RSA encoding and decoding using OpenSSL
 
 DISTNAME =	Crypt-OpenSSL-RSA-0.33
+REVISION =	0
 
 CATEGORIES =	security
 

security/p5-Crypt-OpenSSL-RSA/patches/patch-RSA_xs

@@ -0,0 +1,53 @@
+Passing in a NULL md is no longer supported
+
+Index: RSA.xs
+--- RSA.xs.orig
++++ RSA.xs
+@@ -115,6 +115,7 @@ int get_digest_length(int hash_method)
+ unsigned char* get_message_digest(SV* text_SV, int hash_method)
+ {
+     STRLEN text_length;
++    static unsigned char md[EVP_MAX_MD_SIZE];
+     unsigned char* text;
+
+     text = (unsigned char*) SvPV(text_SV, text_length);
+@@ -122,31 +123,31 @@ unsigned char* get_message_digest(SV* text_SV, int has
+     switch(hash_method)
+     {
+         case NID_md5:
+-            return MD5(text, text_length, NULL);
++            return MD5(text, text_length, md);
+             break;
+         case NID_sha1:
+-            return SHA1(text, text_length, NULL);
++            return SHA1(text, text_length, md);
+             break;
+ #ifdef SHA512_DIGEST_LENGTH
+         case NID_sha224:
+-            return SHA224(text, text_length, NULL);
++            return SHA224(text, text_length, md);
+             break;
+         case NID_sha256:
+-            return SHA256(text, text_length, NULL);
++            return SHA256(text, text_length, md);
+             break;
+         case NID_sha384:
+-            return SHA384(text, text_length, NULL);
++            return SHA384(text, text_length, md);
+             break;
+         case NID_sha512:
+-            return SHA512(text, text_length, NULL);
++            return SHA512(text, text_length, md);
+             break;
+ #endif
+         case NID_ripemd160:
+-            return RIPEMD160(text, text_length, NULL);
++            return RIPEMD160(text, text_length, md);
+             break;
+ #ifdef WHIRLPOOL_DIGEST_LENGTH
+         case NID_whirlpool:
+-            return WHIRLPOOL(text, text_length, NULL);
++            return WHIRLPOOL(text, text_length, md);
+             break;
+ #endif
+         default: