vendor: github.com/creack/pty v1.1.21

full diff: https://github.com/creack/pty/compare/v1.1.18...v1.1.21

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/creack/pty/ioctl_legacy.go

@@ -0,0 +1,10 @@
+//go:build !windows && !go1.12
+// +build !windows,!go1.12
+
+package pty
+
+import "os"
+
+func ioctl(f *os.File, cmd, ptr uintptr) error {
+	return ioctlInner(f.Fd(), cmd, ptr) // fall back to blocking io (old behavior)
+}