fixed indent

aider/io.py

@@ -113,8 +113,10 @@ class InputOutput:
             }
             if self.input_history_file is not None:
                 session_kwargs["history"] = FileHistory(self.input_history_file)
+
             session = PromptSession(**session_kwargs)
             line = session.prompt()
+
             if line.strip() == "{" and not multiline_input:
                 multiline_input = True
                 continue