Style/RedundantException auto-correction does not keep parenthesization

[deivid-rodriguez]

Style/RedundantException auto-correction does not keep original parenthesization of the raise method call, and that can cause unparsable ruby.

Expected behavior

Rubocop keeps presence or absence of parentheses in the raise method call when auto-correcting.

Actual behavior

Rubocop removes parenthesis from the raise method call.

Steps to reproduce the problem

$ echo "system(*args) || raise(RuntimeError, 'hola')" | bundle exec rubocop --only Style/RedundantException --stdin file.rb --auto-correct
Inspecting 1 file
E

Offenses:

file.rb:1:18: C: [Corrected] Style/RedundantException: Redundant RuntimeError argument can be removed.
system(*args) || raise(RuntimeError, 'hola')
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
file.rb:1:24: E: Lint/Syntax: unexpected token tSTRING
(Using Ruby 2.1 parser; configure using TargetRubyVersion parameter, under AllCops)
system(*args) || raise 'hola'
                       ^^^^^^

1 file inspected, 2 offenses detected, 1 offense corrected
====================
system(*args) || raise 'hola'

RuboCop version

$ rubocop -V
0.52.1 (using Parser 2.4.0.2, running on ruby 2.5.0 x86_64-linux)