Remove mallocs from 2020 aimer.

Change-Id: Ic447442984b4edafb07e86b46627684718c43968
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/y2020/control_loops/superstructure/turret/aiming.h b/y2020/control_loops/superstructure/turret/aiming.h
index 217085c..f38113d 100644
--- a/y2020/control_loops/superstructure/turret/aiming.h
+++ b/y2020/control_loops/superstructure/turret/aiming.h
@@ -64,6 +64,8 @@
   // Real-world distance to the target.
   double target_distance_ = 0.0;  // meters
   double inner_port_angle_ = 0.0;  // radians
+
+  Eigen::Matrix<double, 2, 2> Tlr_to_la_;
 };
 
 }  // namespace turret