Provide a way of not closing brackets when an exception occurs during serialization.

[kichalla]

Related to aspnet/Mvc#5413
On investigating the above issue we found that not closing the json writer in case of exceptions would result in any rented buffers to be not returned to the array pool. And any workarounds on MVC side to fix this seems to be dealing with internal details of Json.NET which feels incorrect.

Proposal:
Could JsonSerializerSettings expose an option to either close(default)/not-close the brackets on exception? Based on the option, could JsonSerializerInternalWriter poison the state of the writer it's using so that the writer knows not to close the brackets since an exception has occurred?

@Eilon

[JamesNK]

I don't want to add a setting to JsonSerializerSettings for something so niche but I could add a flag to JsonTextWriter.

[kichalla]

That sounds good!

[Eilon]

@JamesNK cool. Do you see this feature making its way in at any point in the near future? Anything we can do to help?

[JamesNK]

It isn't difficult, just a bool property to control what happens when JsonTextWriter is disposed/closed.

I don't know when the next release will be - the number of changes is turning out to be huge and there isn't a pressing need. I'll probably wait until after VS2017 is out and I can move over to the csproj.

[JamesNK]

Done - 55afb9a

FYI I might change the property name if I can think of something I like more

[Eilon]

@JamesNK very cool, thanks!