Update length after unescaping the value
Update length after unescaping the value

yeahdongcn/SEnginx,yeahdongcn/SEnginx,vkholodkov/nginx-eval-module,yeahdongcn/SEnginx,openresty/nginx-eval-module,guanhui07/nginx-eval-module,yeahdongcn/SEnginx,openresty/nginx-eval-module,openresty/nginx-eval-module,yeahdongcn/SEnginx,guanhui07/nginx-eval-module,guanhui07/nginx-eval-module,yeahdongcn/SEnginx,yeahdongcn/SEnginx