method parameters ending with comma crash rubocop

[aaronjensen]

Something like: foo(3,4,) or foo(a: 3, b: 4,) crashes.

gems/rubocop-0.4.2/lib/rubocop/cop/align_parameters.rb:46:in `get_args':  (RuntimeError)
app/helpers/categories_helper.rb: [:method_add_arg, [:fcall, [:@ident, "link_to", #<struct Rubocop::Cop::Position lineno=23, column=4>]], [:arg_paren, [[:method_add_arg, [:fcall, [:@ident, "t", #<struct Rubocop::Cop::Position lineno=24, column=6>]], [:arg_paren, [:args_add_block, [[:string_literal, [:string_content, [:@tstring_content, "shared.categories.reset-link", #<struct Rubocop::Cop::Position lineno=24, column=9>]]], [:bare_assoc_hash, [[:assoc_new, [:@label, "default:", #<struct Rubocop::Cop::Position lineno=24, column=40>], [:string_literal, [:string_content, [:@tstring_content, "Reset Filters", #<struct Rubocop::Cop::Position lineno=24, column=50>]]]]]]], false]]], [:vcall, [:@ident, "collection_path", #<struct Rubocop::Cop::Position lineno=25, column=6>]], [:bare_assoc_hash, [[:assoc_new, [:@label, "class:", #<struct Rubocop::Cop::Position lineno=26, column=6>], [:string_literal, [:string_content, [:@tstring_content, "reset disabled", #<struct Rubocop::Cop::Position lineno=26, column=14>]]]], [:assoc_new, [:@label, "title:", #<struct Rubocop::Cop::Position lineno=27, column=6>], [:method_add_arg, [:fcall, [:@ident, "t", #<struct Rubocop::Cop::Position lineno=27, column=13>]], [:arg_paren, [:args_add_block, [[:string_literal, [:string_content, [:@tstring_content, "tooltips.filtering.reset", #<struct Rubocop::Cop::Position lineno=27, column=16>]]], [:bare_assoc_hash, [[:assoc_new, [:@label, "default:", #<struct Rubocop::Cop::Position lineno=27, column=43>], [:string_literal, [:string_content, [:@tstring_content, "Return filters to the default view", #<struct Rubocop::Cop::Position lineno=27, column=53>]]]]]]], false]]]]]]]]]
        from gems/rubocop-0.4.2/lib/rubocop/cop/align_parameters.rb:16:in `block in inspect'

[bbatsov]

Fixed in RuboCop 0.4.3 which was just released.