Pull in fsw fix that fixes https://github.com/dotnet/corefx/issues/40888 (#343)

steveisok · web-flow · commit e79cf5bb4f16 · 2019-09-11T08:18:11.000-04:00
Backport of: dotnet#41013
diff --git a/src/System.IO.FileSystem.Watcher/src/System/IO/FileSystemWatcher.OSX.cs b/src/System.IO.FileSystem.Watcher/src/System/IO/FileSystemWatcher.OSX.cs
@@ -280,6 +280,8 @@ private void CancellationCallback()
                     finally 
                     {
                         StaticWatcherRunLoopManager.UnscheduleFromRunLoop(_eventStream);
+                        _eventStream.Close();
+                        _eventStream = null;
                     }
                 }
             }

Original file line number	Diff line number	Diff line change
`@@ -280,6 +280,8 @@ private void CancellationCallback()`
`280`	`280`	`finally`
`281`	`281`	`{`
`282`	`282`	`StaticWatcherRunLoopManager.UnscheduleFromRunLoop(_eventStream);`
	`283`	`+ _eventStream.Close();`
	`284`	`+ _eventStream = null;`
`283`	`285`	`}`
`284`	`286`	`}`
`285`	`287`	`}`