Fix crash on exist with "--uds" if socket not exists (#1725)

Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com>

tests/test_cli.py

@@ -95,7 +95,6 @@ def test_cli_call_multiprocess_run() -> None:
 def test_cli_uds(tmp_path: Path) -> None:  # pragma: py-win32
     runner = CliRunner()
     uds_file = tmp_path / "uvicorn.sock"
-    uds_file.touch(exist_ok=True)
 
     with mock.patch.object(Config, "bind_socket") as mock_bind_socket:
         with mock.patch.object(Multiprocess, "run") as mock_run:

uvicorn/main.py

@@ -567,7 +567,7 @@ def run(
         Multiprocess(config, target=server.run, sockets=[sock]).run()
     else:
         server.run()
-    if config.uds:
+    if config.uds and os.path.exists(config.uds):
         os.remove(config.uds)  # pragma: py-win32
 
     if not server.started and not config.should_reload and config.workers == 1: