Make aimer code crash less

Change-Id: I15e5d1c5b4cebe8abf327d0656a6496d84f32def
Signed-off-by: James Kuszmaul <jabukuszmaul+collab@gmail.com>
diff --git a/y2024/control_loops/superstructure/aiming.h b/y2024/control_loops/superstructure/aiming.h
index 21d427a..9bec187 100644
--- a/y2024/control_loops/superstructure/aiming.h
+++ b/y2024/control_loops/superstructure/aiming.h
@@ -45,6 +45,8 @@
   aos::Fetcher<aos::JoystickState> joystick_state_fetcher_;
 
   frc971::control_loops::aiming::TurretGoal current_goal_;
+
+  bool received_joystick_state_ = false;
 };
 
 }  // namespace y2024::control_loops::superstructure