Tie for second ending?

[Thomas Scharkowski]

Hello list,

I have a note tied to alternative endings. How can I get the tie for 
the 2nd ending?

Thank you,
Thomas
cygwin

An example is here:

--
\version "2.2.0"
\header {title = "Tie for second ending?"}
\score 
{
        \notes { 
        \relative c' {
        \repeat volta 2 {
        c d e e~ 
        e f g g~ } 
        \alternative {{ g g g g }  { g g g2 }}  
        }
        }
        \paper{}
}