Comments.

ssl/ssl_lib.c

diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index d99c7d9..e192fc4 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -1142,6 +1142,11 @@
 
 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
 	{
+	/* now
+	 *     int (*cb)(X509_STORE_CTX *),
+	 * but should be
+	 *     int (*cb)(X509_STORE_CTX *, void *arg)
+	 */
 	ctx->app_verify_callback=cb;
 	ctx->app_verify_arg=arg; /* never used */
 	}