[stable17] Ensured large image is unloaded from memory when generating previews#22187

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backportbot-nextcloud[bot] wants to merge 2 commits intostable17from backport/22008/stable17

+7-2

Commits on Aug 11, 2020

fix memory leak caused by not destroying image in Preview/Generate.php

elijahnyp
authored and
backportbot[bot]
committed
Use class that actually has the destroy() method in preview generator

MorrisJobke
authored and
backportbot[bot]
committed