Commit 8ae1bc27 authored by Hugo Beauzée-Luyssen's avatar Hugo Beauzée-Luyssen

Thumbnailer: Ensure a single thread will be created

Or rather that concurrent thumbnail request won't cause the 2nd thread
to call std::terminate

(cherry picked from commit 690cdb97)
Signed-off-by: 's avatarHugo Beauzée-Luyssen <hugo@beauzee.fr>
parent a4a949d5
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