Sauté onion, olives and mushroom pieces in butter. Stir in flour, curry powder and salt, then mushroom broth. Simmer 1 minute; add chicken. Prepare pastry according to package directions. Roll out and cut in 3" circles.
Place 1 tsp. chicken mixture in center of each pastry circle. Fold pastry over, dampen edges and seal with a fork or handle-end of a table knife.