fabtests: Fix message sizes in unexpected_msg test

The first two messages were using different message sizes
for some reason

Signed-off-by: Sai Sunku <[email protected]>

Author: sunkuamzn

fabtests/functional/unexpected_msg.c

@@ -234,14 +234,13 @@ static int exchange_unexp_addr(void)
 		/*
 		 * Send two messages - first will be matched to FI_ADDR_UNSPEC
 		 * Second will be matched to directed receive after fi_av_insert
+		 * Message size is not important - so send 1 byte messages
 		 */
-		ret = ft_post_tx_buf(ep, remote_fi_addr, addrlen, 0, &tx_ctx,
-				     tx_buf, mr_desc, ft_tag);
+		ret = (int) ft_tx(ep, remote_fi_addr, 1, &tx_ctx);
 		if (ret)
 			goto err;
 
-		ret = ft_post_tx_buf(ep, remote_fi_addr, addrlen, 0, &tx_ctx,
-				     tx_buf, mr_desc, ft_tag);
+		ret = (int) ft_tx(ep, remote_fi_addr, 1, &tx_ctx);
 		if (ret)
 			goto err;