bpo-30306: Add missing NEWS entry (GH-5374)

a278ad2f · Nick Coghlan · GitHub · fcf8b4c1 · a278ad2f
Commit a278ad2f authored Jan 28, 2018 by Nick Coghlan Committed by GitHub Jan 28, 2018
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Misc/NEWS.d/next/Library/2018-01-28-14-10-51.bpo-30306.TmKMXi.rst ...S.d/next/Library/2018-01-28-14-10-51.bpo-30306.TmKMXi.rst +4 -0

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--- a/Misc/NEWS.d/next/Library/2018-01-28-14-10-51.bpo-30306.TmKMXi.rst
+++ b/Misc/NEWS.d/next/Library/2018-01-28-14-10-51.bpo-30306.TmKMXi.rst
+contextlib.contextmanager now releases the arguments passed to the
+underlying generator as soon as the context manager is entered. Previously
+it would keep them alive for as long as the context manager was alive, even
+when not being used as a function decorator. Patch by Martin Teichmann.