Port fix from #5807 to 1.0.X - Race condition in ControllerActionInvoker causes NullRef

[rynowak]

See #5807

We need to patch this in 1.0.X

[Eilon]

This patch fix is approved. Please follow the normal code review / pull request process and make sure you make the change in the correct branch.

[rynowak]

30e4224

[Eilon]

Preview builds of this patch fix should be available on the following feeds:

• https://dotnet.myget.org/gallery/aspnet-1-0-5-may2017-patch-public (for fixes in the 1.0.x release)
  • Feed URL to add to NuGet.config: https://dotnet.myget.org/F/aspnet-1-0-5-may2017-patch-public/api/v3/index.json
• https://dotnet.myget.org/gallery/aspnet-1-1-2-may2017-patch-public (for fixes in the 1.1.x release)
  • Feed URL to add to NuGet.config: https://dotnet.myget.org/F/aspnet-1-1-2-may2017-patch-public/api/v3/index.json

If you have a chance, please try out these preview builds and let us know if you have any feedback!