add if to prevent crash

Upstream-commit: 3a20e4e15d27ab0061e5ffb427baf7162de9add9 Component: engine
2013-07-08 18:19:12 +00:00
parent 5449f8eee9
commit 92dc376485
1 changed files with 3 additions and 0 deletions
@@ -1516,6 +1516,9 @@ func (cli *DockerCli) getTtySize() (int, int) {
 	ws, err := term.GetWinsize(cli.terminalFd)
 	if err != nil {
 		utils.Debugf("Error getting size: %s", err)
+		if ws == nil {
+			return 0, 0
+		}
 	}
 	return int(ws.Height), int(ws.Width)
 }