Update vendor

vendor/github.com/GeertJohan/go.rice/rice/writecoff.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"reflect"
+
+	"github.com/akavel/rsrc/binutil"
+	"github.com/akavel/rsrc/coff"
+)
+
+// copied from github.com/akavel/rsrc
+// LICENSE: MIT
+// Copyright 2013-2014 The rsrc Authors. (https://github.com/akavel/rsrc/blob/master/AUTHORS)
+func writeCoff(coff *coff.Coff, fnameout string) error {
+	out, err := os.Create(fnameout)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+	w := binutil.Writer{W: out}
+
+	// write the resulting file to disk
+	binutil.Walk(coff, func(v reflect.Value, path string) error {
+		if binutil.Plain(v.Kind()) {
+			w.WriteLE(v.Interface())
+			return nil
+		}
+		vv, ok := v.Interface().(binutil.SizedReader)
+		if ok {
+			w.WriteFromSized(vv)
+			return binutil.WALK_SKIP
+		}
+		return nil
+	})
+
+	if w.Err != nil {
+		return fmt.Errorf("Error writing output file: %s", w.Err)
+	}
+
+	return nil
+}