tend: Fix the amount tended in bulletin to recipient

The bulletin reports the total amount tended to all ships so far.
Broken in commit 1de48e53da (v4.3.0), not fixed in commit 7cc14a2c9a
(v4.3.1).  Fix the bulletin to report the amount tended to this ship.

Signed-off-by: Markus Armbruster <armbru@pond.sub.org>

src/lib/commands/tend.c

@@ -173,7 +173,7 @@ tend(void)
 		total += transfer;
 		if (transfer && target.shp_own != player->cnum) {
 		    wu(0, target.shp_own, "%s tended %d %s to %s\n",
-		       cname(player->cnum), total, ip->i_name,
+		       cname(player->cnum), transfer, ip->i_name,
 		       prship(&target));
 		}
 	    }