Uncaught (in promise) TypeError: filePatchItem.getRealItemPromise is not a function

[Ben3eeE]

1. Open any file
2. Right click and pick View staged/unstaged changes

Uncaught (in promise) TypeError: filePatchItem.getRealItemPromise is not a function
    at RootController.viewChangesForCurrentFile (C:/Users/lineri/.atom/packages/github/lib/controllers/root-controller.js:532:27)
    at <anonymous>

Atom 1.28.0-dev-a3631f0da
GitHub@2d22966

[smashwilson]

It looks like this was introduced in #1390, so it needs to be backported to:

• 0.16-releases
• 0.15-releases