fix example in docu

PR: 800

doc/crypto/EVP_EncryptInit.pod

diff --git a/doc/crypto/EVP_EncryptInit.pod b/doc/crypto/EVP_EncryptInit.pod
index daf57e5..40e525d 100644
--- a/doc/crypto/EVP_EncryptInit.pod
+++ b/doc/crypto/EVP_EncryptInit.pod
@@ -479,6 +479,7 @@
 		if(!EVP_CipherUpdate(&ctx, outbuf, &outlen, inbuf, inlen))
 			{
 			/* Error */
+			EVP_CIPHER_CTX_cleanup(&ctx);
 			return 0;
 			}
 		fwrite(outbuf, 1, outlen, out);
@@ -486,6 +487,7 @@
 	if(!EVP_CipherFinal_ex(&ctx, outbuf, &outlen))
 		{
 		/* Error */
+		EVP_CIPHER_CTX_cleanup(&ctx);
 		return 0;
 		}
 	fwrite(outbuf, 1, outlen, out);