update vendor

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

vendor/github.com/moby/term/winsize.go

@@ -0,0 +1,20 @@
+// +build !windows
+
+package term // import "github.com/moby/term"
+
+import (
+	"golang.org/x/sys/unix"
+)
+
+// GetWinsize returns the window size based on the specified file descriptor.
+func GetWinsize(fd uintptr) (*Winsize, error) {
+	uws, err := unix.IoctlGetWinsize(int(fd), unix.TIOCGWINSZ)
+	ws := &Winsize{Height: uws.Row, Width: uws.Col, x: uws.Xpixel, y: uws.Ypixel}
+	return ws, err
+}
+
+// SetWinsize tries to set the specified window size for the specified file descriptor.
+func SetWinsize(fd uintptr, ws *Winsize) error {
+	uws := &unix.Winsize{Row: ws.Height, Col: ws.Width, Xpixel: ws.x, Ypixel: ws.y}
+	return unix.IoctlSetWinsize(int(fd), unix.TIOCSWINSZ, uws)
+}