[TIMOB-1256] Titanium.Media.openPhotoGallery's callbacks only work once when multiple contexts involved.

It could be that this is sensitive to a different context than the one which created the Titanium.Media singleton (maybe not related to that, but it's my guess.) Simple test: two JS's, starting with app.js:

Titanium.UI.setBackgroundColor('#000');
var main = Titanium.UI.createWindow({  
    backgroundColor:'#fff',
    fullscreen: true
});

var btn = Ti.UI.createButton({
    title: 'Open test window'
});

btn.addEventListener('click', function(e) {
    var w = Ti.UI.createWindow({
        url: 'win1.js', 
        backgroundColor: 'black', 
        fullscreen:true
    });
    w.open();
});

main.add(btn);
main.open();

And win1.js:

var win = Ti.UI.currentWindow; 
Ti.Media.openPhotoGallery({
    success: function() {Ti.API.info('success');},
    cancel: function() {Ti.API.info('cancel');},
    error: function() {Ti.API.info('error');}
});

var btn = Ti.UI.createButton({ title: 'close' });
btn.addEventListener('click', function() {win.close();});
win.add(btn);

First time you go to the photo gallery, the callbacks will work. Next time not.