Fix hang on session going away when there is nothing to process. Fixes #3284.
git-svn-id: svn://localhost/ardour2/branches/3.0@7316 d708f5d6-7413-0410-9779-e7cbd77b26cf
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@ -394,7 +394,7 @@ Graph::main_thread()
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this->prep();
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if (_graph_empty) {
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if (_graph_empty && !_quit_threads) {
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sem_post (&_callback_done_sem);
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goto again;
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}
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