Fix Windows debug assertion when cancelling pending i/o

Fix Windows debug assertion when cancelling pending i/o

When no pending i/o requests are found, CancelIoEx returns ERROR_NOT_FOUND.

This is ok, since there is nothing else to do before closing the handle.

Related to #22940.

TBR=zra@google.com

Committed: https://github.com/dart-lang/sdk/commit/c1e4e8ef72e9120aa4fe19187c67f8c354e73488

[Florian Schneider, 2017-01-25 01:31:52]

fschneider@google.com changed reviewers:
+ zra@google.com

[Florian Schneider, 2017-01-25 01:32:47]

Description was changed from

==========
Fix Windows debug assertion when cancelling pending i/o

When no pending i/o requests are found, CancelIoEx returns ERROR_NOT_FOUND.

This is ok, since there is nothing else to do before closing the handle.

Related to #22940.
==========

to

==========
Fix Windows debug assertion when cancelling pending i/o

When no pending i/o requests are found, CancelIoEx returns ERROR_NOT_FOUND.

This is ok, since there is nothing else to do before closing the handle.

Related to #22940.

TBR=zra@google.com
==========

[Florian Schneider, 2017-01-25 01:32:56]

TBR

[Florian Schneider, 2017-01-25 01:33:57]

Description was changed from

==========
Fix Windows debug assertion when cancelling pending i/o

When no pending i/o requests are found, CancelIoEx returns ERROR_NOT_FOUND.

This is ok, since there is nothing else to do before closing the handle.

Related to #22940.

TBR=zra@google.com
==========

to

==========
Fix Windows debug assertion when cancelling pending i/o

When no pending i/o requests are found, CancelIoEx returns ERROR_NOT_FOUND.

This is ok, since there is nothing else to do before closing the handle.

Related to #22940.

TBR=zra@google.com

Committed:
https://github.com/dart-lang/sdk/commit/c1e4e8ef72e9120aa4fe19187c67f8c354e73488
==========

[Florian Schneider, 2017-01-25 01:33:58]

Committed patchset #1 (id:1) manually as
c1e4e8ef72e9120aa4fe19187c67f8c354e73488 (presubmit successful).

[zra, 2017-01-25 05:58:30]

lgtm