[stable21] Fix #20913: Check image resource before attempting to preserve alpha #28498
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Signed-off-by: Simon Spannagel <simonspa@kth.se>
backportbot-nextcloud
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requested review from
juliusknorr,
kesselb,
simonspa,
solracsf and
szaimen
simonspa
approved these changes
Aug 18, 2021
juliusknorr
approved these changes
Aug 19, 2021
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backport of #28485