Try not to swallow stacktraces when terminating a process.

noisicaa/audioproc/pipeline.py

@@ -200,7 +200,9 @@ class Pipeline(object):
                 ctxt.duration = self._frame_size
 
         except:  # pylint: disable=bare-except
+            sys.stdout.flush()
             sys.excepthook(*sys.exc_info())
+            sys.stderr.flush()
             os._exit(1)
 
         finally:

noisicaa/core/process_manager.py

@@ -370,6 +370,8 @@ class ProcessImpl(object):
 
     def error_handler(self, event_loop, context):
         event_loop.default_exception_handler(context)
+        sys.stdout.flush()
+        sys.stderr.flush()
         os._exit(1)
 
     def main(self, ready_callback, *args, **kwargs):

noisicaa/ui/editor_app.py

@@ -379,5 +379,7 @@ class EditorApp(BaseEditorApp):
             logger.error(
                 "Failed to show crash dialog: %s", traceback.format_exc())
 
+        sys.stdout.flush()
+        sys.stderr.flush()
         os._exit(EXIT_EXCEPTION)