Parsenodes fix: check if index is out-of-bound first

[merkispavel]

Issue

if the code above results in curren_way_node_index_ == npos then vector out-of-range error happens

if (osmid > (*(*way_nodes_)[current_way_node_index_]).node.osmid_) {
      current_way_node_index_ =
          way_nodes_->find_first_of(OSMWayNode{{osmid}},
                                    [](const OSMWayNode& a, const OSMWayNode& b) {
                                      return a.node.osmid_ <= b.node.osmid_;
                                    },
                                    current_way_node_index_);
    }

Tasklist

• Add tests
• Add #fixes with the issue number that this PR addresses
• Update the docs with any new request parameters or changes to behavior described
• Update the changelog

Requirements / Relations

Link any requirements here. Other pull requests this PR is based on?

[kevinkreiser]

derp, good catch, sorry about that!