Use default definition of p_prompt for passing to base class.

Improves branch coverage. Also related to commit cde8f8ed.

topydo/commands/AppendCommand.py

@@ -24,8 +24,8 @@ class AppendCommand(Command):
                  p_out=lambda a: None,
                  p_err=lambda a: None,
                  p_prompt=lambda a: None):
-        super(AppendCommand, self).__init__(
-            p_args, p_todolist, p_out, p_err, p_prompt=lambda a: None)
+        super(AppendCommand, self).__init__(p_args, p_todolist, p_out, p_err,
+                p_prompt)
 
     def execute(self):
         if not super(AppendCommand, self).execute():

topydo/commands/RevertCommand.py

@@ -25,8 +25,8 @@ class RevertCommand(Command):
                  p_out=lambda a: None,
                  p_err=lambda a: None,
                  p_prompt=lambda a: None):
-        super(RevertCommand, self).__init__(
-            p_args, p_todolist, p_out, p_err, p_prompt=lambda a: None)
+        super(RevertCommand, self).__init__(p_args, p_todolist, p_out, p_err,
+                p_prompt)
 
     def execute(self):
         if not super(RevertCommand, self).execute():