[XamlC] avoid multiple subscription (#3969)
authorStephane Delcroix <stephane@delcroix.org>
Wed, 3 Oct 2018 00:05:09 +0000 (02:05 +0200)
committerSamantha Houts <samhouts@users.noreply.github.com>
Wed, 3 Oct 2018 00:05:09 +0000 (17:05 -0700)
commite186f2a7227104c68f59a50375e0b1f0945cca9a
tree0daf5f45ea54f90397cff301777e9b46d7f08b0f
parent31b8ad198da7e7c6ba1cb1357927f79ad5e027f9
[XamlC] avoid multiple subscription (#3969)

Avoid multiple subscription to PropertyChanged on TypedBindings

- fixes #3613
- fixes #3650
Xamarin.Forms.Core.UnitTests/TypedBindingUnitTests.cs
Xamarin.Forms.Core/TypedBinding.cs