Useless assignment false positive with additional assignment inside loop

[owst]

In the following code, the first assignment to ret is not useless if the loop does not execute:

def while(param)
  ret = 1

  while param != 10
    param += 2
    ret = param + 1
  end

  ret
end

However, rubocop emits the following:

loop_assignment_testcase.rb:2:3: W: Useless assignment to variable - ret.
  ret = 1
  ^^^

this was checked against master:

0.36.0 (using Parser 2.3.0.1, running on ruby 2.2.3 x86_64-darwin14)

I suggest that since the loop is only conditionally executed, the earlier assignment to ret should not be considered useless, as is done for if expressions.

[owst]

I think #2702 resolves this.