Fix anonymous rest argument tracing

[st0012]

Methods with ... parameter doesn't read any argument, so the tracer should just ignore it.

Currently the tracer doesn't handle this case:

❯ ruby -Ilib -r debug target.rb
DEBUGGER: Session start (pid: 54807)
[1, 7] in target.rb
=>    1| binding.b(do: "trace pass 1")
      2|
      3| def foo(...)
      4|   block.call
      5| end
      6|
      7| foo(1)
=>#0    <main> at target.rb:1
(rdbg:binding.break) trace pass 1
Enable PassTracer for 1 (enabled)
Traceback (most recent call last):
        5: from target.rb:7:in `<main>'
        4: from target.rb:4:in `foo'
        3: from /Users/st0012/projects/debug/lib/debug/tracer.rb:142:in `block in setup'
        2: from /Users/st0012/projects/debug/lib/debug/tracer.rb:142:in `each'
        1: from /Users/st0012/projects/debug/lib/debug/tracer.rb:153:in `block (2 levels) in setup'
/Users/st0012/projects/debug/lib/debug/tracer.rb:153:in `local_variable_get': wrong local variable name `*' for #<Binding:0x00007ffb7da840f0> (NameError)

This makes tracer unusable in Rails apps because it uses ... in method delegation

https://github.com/rails/rails/blob/7e8946c4da8b69e3b33a3f16cdfd8923c8756000/activesupport/lib/active_support/core_ext/module/delegation.rb#L198-L199

[ko1]

could you rebase it?

[st0012]

rebased.