Fixes using uninitialised values in extractRouteNames
Conditional jump or move depends on uninitialised value(s)
at 0x5FEE48: osrm::engine::RouteNames osrm::engine::extractRouteNames<osrm::engine::datafacade::BaseDataFacade<osrm::contractor::QueryEdge::EdgeData>, osrm::engine::detail::Segment>(std::vector<osrm::engine::detail::Segment, std::allocator<osrm::engine::detail::Segment> >&, std::vector<osrm::engine::detail::Segment, std::allocator<osrm::engine::detail::Segment> >&, osrm::engine::datafacade::BaseDataFacade<osrm::contractor::QueryEdge::EdgeData> const*) (route_name_extraction.hpp:127)
by 0x61A1B2: osrm::engine::ApiResponseGenerator<osrm::engine::datafacade::BaseDataFacade<osrm::contractor::QueryEdge::EdgeData> >::DescribeRoute(osrm::engine::RouteParameters const&, osrm::engine::InternalRouteResult const&, osrm::util::json::Object&) (api_response_generator.hpp:173)
by 0x61AF47: osrm::engine::plugins::ViaRoutePlugin<osrm::engine::datafacade::BaseDataFacade<osrm::contractor::QueryEdge::EdgeData> >::HandleRequest(osrm::engine::RouteParameters const&, osrm::util::json::Object&) (viaroute.hpp:144)
by 0x61EEEC: osrm::engine::Engine::RunQuery(osrm::engine::RouteParameters const&, osrm::util::json::Object&) (engine.cpp:100)
by 0x5AE585: osrm::OSRM::RunQuery(osrm::engine::RouteParameters const&, osrm::util::json::Object&) (osrm.cpp:19)
by 0x5A8E07: main (in /home/miha/work/foss/osrm-backend/build.example/osrm-example)