Fixed building with a bazel with hdrs_check fixed again.

Change-Id: I015f66cd6e02e07efa367b96edd775015ac0abca
diff --git a/frc971/zeroing/BUILD b/frc971/zeroing/BUILD
index 2d03102..67cb091 100644
--- a/frc971/zeroing/BUILD
+++ b/frc971/zeroing/BUILD
@@ -19,6 +19,7 @@
   ],
   deps = [
     '//frc971/control_loops:queues',
+    '//frc971:constants',
   ],
 )