wpe: Run frameComplete outside of images mutex scope
If the mutex is locked while running frameComplete there is a potential deadlock bound to happen when we get a new exported images from the backend.
Fixes #1101 (closed)
CC @zdobersek
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If the mutex is locked while running frameComplete there is a potential deadlock bound to happen when we get a new exported images from the backend.
Fixes #1101 (closed)
CC @zdobersek