mount command on windows returns an error instead of nil and adjusted unix-only code

cmd/ipfs/mount_unix.go

@@ -1,4 +1,4 @@
-// +build !windows
+// +build linux darwin freebsd
 
 package main
 

cmd/ipfs/mount_windows.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"fmt"
+	"errors"
 	"github.com/gonuts/flag"
 	"github.com/jbenet/commander"
 )
@@ -15,7 +15,5 @@ var cmdIpfsMount = &commander.Command{
 }
 
 func mountCmd(c *commander.Command, inp []string) error {
-	fmt.Printf("not implemented yet\n")
-
-	return nil
+	return errors.New("mount not yet implemented on windows")
 }

fuse/readonly/readonly_unix.go

@@ -1,6 +1,6 @@
 // A Go mirror of libfuse's hello.c
 
-// +build !windows
+// +build linux darwin freebsd
 
 package readonly