fixed an upforwd test error.

4 jobs for upforwd-error in 11 minutes and 13 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Build
passed #2362
linux docker
build:debian:sid:amd64

00:05:14

passed #2363
linux docker
build:debian:sid:i386

00:05:34

 
  Test
passed #2364
linux docker
test:debian:sid:amd64

00:05:37

passed #2365
linux docker
test:debian:sid:i386

00:05:37