sdk/lib/async/stream_impl.dart - Issue 896793002: Avoid crashing when a closed StreamIterator is cancelled

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Unified Diff: sdk/lib/async/stream_impl.dart

Issue 896793002: Avoid crashing when a closed StreamIterator is cancelled (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart

Patch Set: Created 5 years, 11 months ago

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Index: sdk/lib/async/stream_impl.dart

diff --git a/sdk/lib/async/stream_impl.dart b/sdk/lib/async/stream_impl.dart

index 394e1c6a7c72b51b25fc7df35554941a94e2e2e5..ffe7bbb4f56aa668392ff8de726cc9d801500edf 100644

--- a/sdk/lib/async/stream_impl.dart

+++ b/sdk/lib/async/stream_impl.dart

@@ -1036,7 +1036,7 @@ class _StreamIteratorImpl<T> implements StreamIterator<T> {

} else {

_clear();

}

- return subscription.cancel();

+ return (subscription == null) ? null : subscription.cancel();

}

void _onData(T data) {

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