make mypy happy

freqtrade/main.py

@@ -12,7 +12,7 @@ if sys.version_info < (3, 6):
 # flake8: noqa E402
 import logging
 from argparse import Namespace
-from typing import List
+from typing import Any, List
 
 from freqtrade import OperationalException
 from freqtrade.arguments import Arguments
@@ -29,12 +29,11 @@ def main(sysargv: List[str] = None) -> None:
     :return: None
     """
 
+    return_code: Any = 1
+    worker = None
     try:
         set_loggers()
 
-        worker = None
-        return_code = 1
-
         arguments = Arguments(
             sysargv,
             'Free, open source crypto trading bot'