Use std::fill since same value is applied to all filters

moveit_core/online_signal_smoothing/src/butterworth_filter.cpp

@@ -102,11 +102,7 @@ bool ButterworthFilterPlugin::initialize(rclcpp::Node::SharedPtr node, moveit::c
   num_joints_ = num_joints;
   auto param_listener_ = std::make_unique<online_signal_smoothing::ParamListener>(node_);
   auto filter_coeff = param_listener_->get_params().butterworth_filter_coeff;
-
-  for (std::size_t i = 0; i < num_joints_; ++i)
-  {
-    position_filters_.emplace_back(filter_coeff);
-  }
+  std::fill(position_filters_.begin(), position_filters_.end(), filter_coeff);
   return true;
 };