Fix 'bytes object has no attribute encode' in pipe-mode stdout reader

Author: nodeeeeee

gui.py

@@ -662,7 +662,7 @@ def _process_chunk(raw: bytes) -> None:
                         pass
                 else:
                     for line in state.proc.stdout:
-                        _process_chunk(line.encode())
+                        _process_chunk(line)
                         now = time.monotonic()
                         if now - _last_update >= _UPDATE_INTERVAL:
                             if buf: