Style/StructInheritance auto-correct can result in an empty block lint violation if the class is empty.

[snood1205]

The Style/StructInheritance auto-correct treats all class _ < Struct.new inheritance to Struct.new do; end instead of just Struct.new

---

Expected behavior

If there a struct defined in the following format with an empty class body, as portrayed below:

class Foo < Struct.new(:bar, :baz)
end

It should be corrected to

Foo = Struct.new(:bar, :baz)

Actual behavior

The class mentioned above is corrected to

Foo = Struct.new(:bar, :baz) do
end

This will cause another rubocop violation for an empty block upon running rubocop again.

Steps to reproduce the problem

Any Struct declared in class syntax with an empty body will cause this problem

RuboCop version

$ bundle exec rubocop -V
1.11.0 (using Parser 3.0.0.0, rubocop-ast 1.4.1, running on ruby 2.7.1 x86_64-darwin19)
  - rubocop-rspec 2.2.0