[TIMOB-2772] Android: View with auto width added to a ScrollView causes crash

If you have a ScrollView then add a view to it -- and that view has no width property or width='auto' -- the application will crash when the child view is added to the ScrollView.

Failcase app.js:

Titanium.UI.setBackgroundColor('#000');
var win = Titanium.UI.createWindow({  
    title:'Test',
    backgroundColor:'#fff',
    exitOnClose: true
});

var sv = Ti.UI.createScrollView({
    contentWidth: 'auto',
    contentHeight: 'auto',
    height: 'auto',
    top: 0,
    backgroundColor: 'blue'
});

var v = Ti.UI.createView({
    backgroundColor: 'yellow',
    top: 0,
    height: 100
});

v.add(Ti.UI.createLabel({text: 'ScrollView child successfully added'}));

sv.add(v);
win.add(sv);
win.open();