Clean up filter_map!

MilesCranmer · MilesCranmer · commit d42b570edce5 · 2023-05-07T19:52:02.000-04:00
diff --git a/src/tree_map.jl b/src/tree_map.jl
@@ -212,6 +212,7 @@ function filter_map!(
             @inbounds destination[pointer.x += 1] = map_result
         end
     end
+    return nothing
 end
 
 """
