Simplify logic in superstructure rollers

Change-Id: Ibeacf80b95e21409f5e8e3e76fe00af8033faf51
diff --git a/y2019/control_loops/superstructure/superstructure.cc b/y2019/control_loops/superstructure/superstructure.cc
index 5edfce3..a75f9a1 100644
--- a/y2019/control_loops/superstructure/superstructure.cc
+++ b/y2019/control_loops/superstructure/superstructure.cc
@@ -67,10 +67,8 @@
                      status->intake.estopped || status->stilts.estopped;
 
   if (output) {
-    if (status->intake.position > kMinIntakeAngleForRollers) {
-      output->intake_roller_voltage =
-          (unsafe_goal != nullptr) ? unsafe_goal->roller_voltage : 0.0;
-
+    if (unsafe_goal && status->intake.position > kMinIntakeAngleForRollers) {
+      output->intake_roller_voltage = unsafe_goal->roller_voltage;
     } else {
       output->intake_roller_voltage = 0.0;
     }