undo nonsense patch (r *is* signed or we have signedness mismatches elsewhere)
diff --git a/ssl/ssltest.c b/ssl/ssltest.c
index 1d9b30d..1afdfa7 100644
--- a/ssl/ssltest.c
+++ b/ssl/ssltest.c
@@ -991,7 +991,7 @@
 			do
 				{
 				size_t num;
-				size_t r;
+				int r;
 
 				r1 = BIO_ctrl_pending(io1);
 				r2 = BIO_ctrl_get_write_guarantee(io2);