[Bug #20915] Fix SEGV with `TracePoint#parameters` and aliased C method

The following snippet results with a SEGV:

```ruby
C = Class.new do
  alias_method :new_to_s, :to_s
end

TracePoint.new(:c_call, &:parameters).enable { C.new.new_to_s }
```

at MRI 3.3.6 and ruby 3.4.0dev

The root cause of the issue lies in the `rb_tracearg_parameters` function
within the `RUBY_EVENT_C_RETURN` branch. Specifically, when the invoked
method is an alias for a C function,
`rb_method_entry_without_refinements(..., trace_arg->called_id, ...)`
may return NULL. In that case we can fallback to `trace_arg->id`.

0 files changed, 0 insertions, 0 deletions