send link file should use os.Lstat

[chyroc]

// SendFile copies a single local file to the remote server.
// The time and permission will be set with the value of the source file.
func (s *SCP) SendFile(srcFile, destFile string) error {
	srcFile = filepath.Clean(srcFile)
	destFile = realPath(filepath.Clean(destFile))

	return runSourceSession(s.client, destFile, false, s.SCPCommand, false, true, func(s *sourceSession) error {
		osFileInfo, err := os.Stat(srcFile)
		if err != nil {
			return fmt.Errorf("failed to stat source file: err=%s", err)
		}
...
}

use: osFileInfo, err := os.Stat(srcFile)

should replace by os.Lstat to compatible link file

[chyroc]

when ln -s a b and b not exist, code will return file not found error

[chyroc]

this is my code:

	f, _ := os.Lstat(src)
	if f.Mode()&os.ModeSymlink != 0 {
		link, err := os.Readlink(src)
		if err != nil {
			return err
		}
		// run ln -s <link> desc on remote server
...