type hint

odoo_scripts/docker_dev_start.py

@@ -1396,7 +1396,7 @@
     return int(exit_code)
 
 
-def find_free_port():
+def find_free_port() -> int:
     with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as s:
         s.bind(("", 0))
         s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)