/ lmms Public
Fix deadlock when exporting is finished, if the project has any Sample TCO(s). #3742
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stopProcessing()when the rendering ends, to prevent
requsetChangeInModels()from waiting for
runChangesInModels(), which causes a deadlock.
#3344 (comment) is another solution, but this one is more fundamental than #3344 (comment).
Tested for both GUI and CLI, and both single-file rendering and rendering per track, works well.