Default value of option in repeated subcommand not applied correctly

[sfeuerhahn]

Say I have the following command in which mysubcommand is a repeatable subcommand:
mycommand mysubcommand param mysubcommand -t test param
In this case the first subcommand's default value for the -t option is not set correctly by Interpreter.applyDefaultValues(). The reason seems to be that parsing the second subcommand adds the -t option to the set of initialized arguments: Set<ArgSpec> initialized. This set is then also used when setting the default values of the first subcommand. Thus applyDefaultValues() falsely believes it is already initialized.