tty: rm inheritStdio return value

Since commit eebdb644f9 this function never returns any error.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

tty.go

@@ -63,11 +63,10 @@ func setupProcessPipes(p *libcontainer.Process, rootuid, rootgid int) (*tty, err
 	return t, nil
 }
 
-func inheritStdio(process *libcontainer.Process) error {
+func inheritStdio(process *libcontainer.Process) {
 	process.Stdin = os.Stdin
 	process.Stdout = os.Stdout
 	process.Stderr = os.Stderr
-	return nil
 }
 
 func (t *tty) initHostConsole() error {

utils_linux.go

@@ -164,9 +164,7 @@ func setupIO(process *libcontainer.Process, rootuid, rootgid int, createTTY, det
 	// when runc will detach the caller provides the stdio to runc via runc's 0,1,2
 	// and the container's process inherits runc's stdio.
 	if detach {
-		if err := inheritStdio(process); err != nil {
-			return nil, err
-		}
+		inheritStdio(process)
 		return &tty{}, nil
 	}
 	return setupProcessPipes(process, rootuid, rootgid)