rb_class_new_instance() automatically passes the block forward to the initialize method.
That way the block of a callback is forwarded to the Struct initializer, like here in the specs:

      s = LibTest::S8F32S32.new
      ret = LibTest.testCallbackVrT { s }

Struct#initialize ignores the block, so that the code works, but it doesn't make sense.

This stood up when enabling rbs type checks, which complained about an unspecified block to Struct#initialize.

They stood up when running with rbs type checks enabled.

For better readability.
And add some comments.

Similar to commit 5b4b406

rb_class_new_instance() automatically passes the block forward to the initialize method.
That way the block of an array function is forwarded to the Struct initializer.
Struct#initialize ignores the block, so that the code works, but it doesn't make sense.

This stood up when enabling rbs type checks, which complained about an unspecified block to Struct#initialize.

  11) MemoryPointer allows writing as a sized int
      Failure/Error: put(type, 0, value)

      RBS::Test::Tester::TypeError:
        TypeError: [FFI::AbstractMemory#put] ArgumentTypeError: expected `bot` (value) but given `1`

  11) MemoryPointer allows writing as a sized int
      Failure/Error: m.write :uint32, 1

      RBS::Test::Tester::TypeError:
        TypeError: [FFI::Pointer#write] ArgumentTypeError: expected `bot` (value) but given `1`
      # /home/lars/.rvm/gems/ruby-3.3.0/gems/rbs-3.4.1/lib/rbs/test/tester.rb:158:in `call'
      # /home/lars/.rvm/gems/ruby-3.3.0/gems/rbs-3.4.1/lib/rbs/test/observer.rb:10:in `notify'
      # /home/lars/.rvm/gems/ruby-3.3.0/gems/rbs-3.4.1/lib/rbs/test/hook.rb:178:in `ensure in write__with__RBS_TEST_eb5149_4888829b'
      # /home/lars/.rvm/gems/ruby-3.3.0/gems/rbs-3.4.1/lib/rbs/test/hook.rb:178:in `write__with__RBS_TEST_eb5149_4888829b'
      # ./spec/ffi/rbx/memory_pointer_spec.rb:65:in `block (2 levels) in <top (required)>'
      # ------------------
      # --- Caused by: ---
      # RBS::Test::Tester::TypeError:
      #   TypeError: [FFI::AbstractMemory#put] ArgumentTypeError: expected `bot` (value) but given `1`
      #   /home/lars/.rvm/gems/ruby-3.3.0/gems/rbs-3.4.1/lib/rbs/test/tester.rb:158:in `call'

…mbol

By convention as discussed in ParadoxV5#1 (comment)

https://github.com/ParadoxV5/ruby-ffi/pull/1/files#r1440105066