ion-select sets its bound model to an empty object when there are no ion-options

[zakton5]

Ionic version: (check one with "x")
[ ] 1.x
[x] 2.x

I'm submitting a ... (check one with "x")
[x] bug report
[] feature request
[ ] support request

Current behavior:
If I open a select with no ion-options and then click 'OK', the bound model's value becomes {}.

Expected behavior:
I expect the bound model's value to become null or undefined.

Ionic info: (run ionic info from a terminal/cmd prompt and paste output below):
Cordova CLI: 6.4.0
Ionic Framework Version: 2.0.0
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
Ionic App Scripts Version: 1.0.0
ios-deploy version: 1.9.0
ios-sim version: 5.0.13
OS: OS X El Capitan
Node Version: v6.9.1
Xcode version: Xcode 8.2.1 Build version 8C1002

[jgw96]

Thanks for opening an issue with us, we will look into this!

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.