Style/NegatedIfElseCondition cop error with empty conditional block

[davidenglishmusic]

Expected behavior

Not throw an error.

Actual behavior

Throws an error:
An error occurred while Style/NegatedIfElseCondition cop was inspecting example.rb

With debug flag:

Expected a Parser::Source::Range, Comment or Rubocop::AST::Node, got NilClass
/Users/david/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rubocop-1.2.0/lib/rubocop/cop/corrector.rb:94:in `to_range'

Steps to reproduce the problem

Run rubocop on the following code ( contrived example ) with the Style/NegatedIfElseCondition cop enabled:

some_val = 1

if !some_val.nil?
else
  some_val = 2
end

RuboCop version

1.2.0 (using Parser 2.7.2.0, rubocop-ast 1.1.1, running on ruby 2.6.6 x86_64-darwin19)