Prevents the Future result from being set twice. (#1599)

Signed-off-by: Tomoya Fujita <Tomoya.Fujita@sony.com>
Co-authored-by: Nadav Elkabets <elnadav12@gmail.com>
(cherry picked from commit a348801)

# Conflicts:
#	rclpy/rclpy/action/server.py

Author: fujitatomoya

rclpy/rclpy/action/server.py

@@ -148,12 +148,27 @@ def publish_feedback(self, feedback):
 
     def succeed(self):
         self._update_state(_rclpy.GoalEvent.SUCCEED)
+<<<<<<< HEAD
+=======
+        if response is not None:
+            self._set_result(response)
+>>>>>>> a348801 (Prevents the Future result from being set twice. (#1599))
 
     def abort(self):
         self._update_state(_rclpy.GoalEvent.ABORT)
+<<<<<<< HEAD
+=======
+        if response is not None:
+            self._set_result(response)
+>>>>>>> a348801 (Prevents the Future result from being set twice. (#1599))
 
     def canceled(self):
         self._update_state(_rclpy.GoalEvent.CANCELED)
+<<<<<<< HEAD
+=======
+        if response is not None:
+            self._set_result(response)
+>>>>>>> a348801 (Prevents the Future result from being set twice. (#1599))
 
     def destroy(self):
         with self._lock: