Fix warning.
(cherry picked from commit c97ec5631bb08a2171a125008d2f0d2a75687aaa)

ssl/s23_clnt.c

diff --git a/ssl/s23_clnt.c b/ssl/s23_clnt.c
index dad7e3a..e32fbbf 100644
--- a/ssl/s23_clnt.c
+++ b/ssl/s23_clnt.c
@@ -285,7 +285,7 @@
 			send_time = (s->mode & SSL_MODE_SEND_CLIENTHELLO_TIME) != 0;
 		if (send_time)
 			{
-			unsigned long Time = time(NULL);
+			unsigned long Time = (unsigned long)time(NULL);
 			unsigned char *p = result;
 			l2n(Time, p);
 			return RAND_pseudo_bytes(p, len-4);