Merge pull request opencontainers#549 from crosbymichael/tty-close

Close tty on error before handler

Author: LK4D4

utils.go

@@ -308,13 +308,15 @@ func runProcess(container libcontainer.Container, config *specs.Process, listenF
 	}
 
 	if err := container.Start(process); err != nil {
+		tty.Close()
 		return -1, err
 	}
 
 	if pidFile != "" {
 		if err := createPidFile(pidFile, process); err != nil {
 			process.Signal(syscall.SIGKILL)
 			process.Wait()
+			tty.Close()
 			return -1, err
 		}
 	}