Convert libssl writing for size_t

Reviewed-by: Rich Salz <rsalz@openssl.org>
diff --git a/ssl/s3_msg.c b/ssl/s3_msg.c
index 82513d2..a39994e 100644
--- a/ssl/s3_msg.c
+++ b/ssl/s3_msg.c
@@ -90,12 +90,14 @@
 int ssl3_dispatch_alert(SSL *s)
 {
     int i, j;
-    unsigned int alertlen;
+    size_t alertlen;
     void (*cb) (const SSL *ssl, int type, int val) = NULL;
+    size_t written;
 
     s->s3->alert_dispatch = 0;
     alertlen = 2;
-    i = do_ssl3_write(s, SSL3_RT_ALERT, &s->s3->send_alert[0], &alertlen, 1, 0);
+    i = do_ssl3_write(s, SSL3_RT_ALERT, &s->s3->send_alert[0], &alertlen, 1, 0,
+                      &written);
     if (i <= 0) {
         s->s3->alert_dispatch = 1;
     } else {
@@ -121,5 +123,5 @@
             cb(s, SSL_CB_WRITE_ALERT, j);
         }
     }
-    return (i);
+    return i;
 }