[3.12] gh-109538: Catch closed loop runtime error and issue warning (GH-111983) #112142
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Issue a ResourceWarning instead.
(cherry picked from commit e0f5127) gh-109538: Avoid RuntimeError when StreamWriter is deleted with closed loop (#111983)
Issue a ResourceWarning instead.
Co-authored-by: Hugo van Kemenade hugovk@users.noreply.github.com
(cherry picked from commit e0f5127)