Use after dispose bug in SafeDeleteSslContext.WriteToConnection on OSX

[davidfowl]

Description

This showed up in this pull request #49573 (comment).

Regression?

Nope. The PR exposed the issue because it started to null out a new field (a buffer) in dispose.

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

Tagging subscribers to this area: @dotnet/ncl, @vcsjones
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Description

This showed up in this pull request #49573 (comment).

Regression?

Nope. The PR exposed the issue because it started to null out a new field (a buffer) in dispose.

Author:	davidfowl
Assignees:	-
Labels:	area-System.Net.Security
Milestone:	-