client/console: don't fail writing history file when ~ is deleted

/reviewed-on nexedi/slapos.core!52

slapos/client.py

@@ -139,6 +139,7 @@ def do_console(local):
     historyPath = os.path.expanduser("~/.slapconsolehistory")
 
     def save_history(historyPath=historyPath):
+      if os.path.exists(os.path.dirname(historyPath)):
         readline.write_history_file(historyPath)
     if os.path.exists(historyPath):
       readline.read_history_file(historyPath)