Wrong check: Empty close_all means close all windows

Author: nlpsuge

.vscode/launch.json

@@ -10,7 +10,7 @@
             "request": "launch",
             "program": "xsession_manager/tests/run_main.py",
             "console": "integratedTerminal",
-            "args": ["-r","testing-save-session","-i", "super"],
+            "args": ["-c"],
             "justMyCode": false
         }
     ]

xsession_manager/arguments_handler.py

@@ -122,7 +122,8 @@ def handle_arguments(self):
             xsm = XSessionManager(verbose=self.args.verbose, vv=self.args.vv)
             xsm.save_session(session_name_for_saving)
 
-        if close_all:
+        # Empty close_all means close all windows
+        if close_all is not None:
             print(constants.Prompts.MSG_CLOSE_ALL_WINDOWS)
             self.wait_for_answer()
             # TODO Order sensitive?