fix echo handler to return error https://github.com/labstack/echo/commit/381fbae1ffa4a0e3644d69da96463222260ce574
fix echo handler to return error https://github.com/labstack/echo/commit/381fbae1ffa4a0e3644d69da96463222260ce574

sunisdown/go-http-routing-benchmark,Waynelilns/go-http-routing-benchmark,wmydz1/go-http-routing-benchmark,vishr/go-http-routing-benchmark,twanies/go-http-routing-benchmark,julienschmidt/go-http-routing-benchmark