Quit() doesn't exit on linux

[meskio]

A simple example:

package main

import (
        "fmt"

        "github.com/getlantern/systray"
)

func main() {
        systray.Run(onReady, onExit)
}

func onReady() {
        systray.Quit()
}

func onExit() {
        fmt.Println("exiting now")
}

It hangs for ever and never prints exiting now.