clear redis if no db state available

src/dexorder/bin/main.py

@@ -83,12 +83,12 @@ async def main():
             state = await db_state.load()
             if state is None:
                 log.info('no state in database')
+                await redis_state.clear()
             else:
                 current_blockstate.set(state)
                 if redis_state:
                     await redis_state.init(state, state.root_fork)
                 log.info(f'loaded state from db for root block {state.root_branch.height}')
-
     runner = BlockStateRunner(state, publish_all=publish_all if redis_state else None)
     setup_logevent_triggers(runner)
     # OHLC printing hard-disabled for main.  Use the finaldata process.