#254905, #262477

http://cvs.openssl.org/chngview?cn=15978

EVP_CIPHER_CTX_key_length() should return the set key length in the 
EVP_CIPHER_CTX structure which may not be the same as the underlying 
cipher key length for variable length ciphers.

--- a/crypto/evp/evp_lib.c	2006/11/29 20:47:13	1.10.2.1
+++ b/crypto/evp/evp_lib.c	2007/02/27 18:42:52	1.10.2.2
@@ -225,7 +225,7 @@
 
 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
 	{
-	return ctx->cipher->key_len;
+	return ctx->key_len;
 	}
 
 int EVP_CIPHER_nid(const EVP_CIPHER *cipher)