Correct a typo.

Have EVP_PKEY_cmp() call EVP_PKEY_cmp_parameters(), and make a note
about the lack of parameter comparison for EC.

crypto/evp/p_lib.c

@@ -150,7 +150,7 @@ int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
 	return(0);
 	}
 
-int EVP_PKEY_copy_parameters(EVP_PKEY *to, cpnst EVP_PKEY *from)
+int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
 	{
 	if (to->type != from->type)
 		{
@@ -242,6 +242,15 @@ int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
 	if (a->type != b->type)
 		return -1;
 
+	/* XXXXX
+	   We should really check for != 0, but cmp_paramters doesn't compare EC
+	   groups, and I'm currently unsure how to handle that case...  Except for
+	   adding such functionality to cmp_parameters, but that would require
+	   things like EC_GROUP_cmp(), which I'm not currently ready to write.
+	   -- Richard Levitte */
+	if (EVP_PKEY_cmp_parameters(a, b) == 1)
+		return 1;
+
 	switch (a->type)
 		{
 #ifndef OPENSSL_NO_RSA