tty: ClosePostStart: rm return value

It is not and was not ever used.

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

tty.go

@@ -159,11 +159,10 @@ func (t *tty) waitConsole() error {
 
 // ClosePostStart closes any fds that are provided to the container and dup2'd
 // so that we no longer have copy in our process.
-func (t *tty) ClosePostStart() error {
+func (t *tty) ClosePostStart() {
 	for _, c := range t.postStart {
 		_ = c.Close()
 	}
-	return nil
 }
 
 // Close closes all open fds for the tty and/or restores the original

utils_linux.go

@@ -301,10 +301,7 @@ func (r *runner) run(config *specs.Process) (int, error) {
 		r.terminate(process)
 		return -1, err
 	}
-	if err = tty.ClosePostStart(); err != nil {
-		r.terminate(process)
-		return -1, err
-	}
+	tty.ClosePostStart()
 	if r.pidFile != "" {
 		if err = createPidFile(r.pidFile, process); err != nil {
 			r.terminate(process)