Style/TernaryParentheses auto-correct generates invalid Ruby

[Drenmi]

If you are using parentheses, Ruby let's you place the question mark operator of a ternary like this:

(foo)? bar : baz

(Note the lack of space between the condition and the operator.)

Style/TernaryParentheses needs to keep this in mind when auto-correcting, as currently it will generate invalid Ruby code by just removing the closing paren.

(This offense is separately checked by Style/SpaceAroundOperators, but we can't count on it being always enabled and first.)

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Expected behavior

RuboCop should auto-correct to:

foo ? bar : baz

Actual behavior

RuboCop auto-corrects to:

foo? ? bar : baz

Steps to reproduce the problem

Run bundle exec rubocop --only Style/TernaryParentheses -a on:

(foo)? bar : baz

RuboCop version

Include the output of rubocop -V. Here's an example:

$ rubocop -V
0.47.1 (using Parser 2.3.3.1, running on ruby 2.3.3 x86_64-darwin15)