fix(@angular-devkit/schematics): upgrade using tslint output has too …

[alan-agius4]

…much whitespace

Fixes #12653

[devversion]

Based on my testing, unnecessary whitespace also shows up if there were failures/replacements that have been reported by the given rules.

Shouldn't we always trim the output?

• https://github.com/palantir/tslint/blob/master/src/formatters/proseFormatter.ts#L49
• https://github.com/palantir/tslint/blob/master/src/formatters/proseFormatter.ts#L62

[alan-agius4]

At least it didn’t bother me of having an empty line at the end but than seeing it’s in the refactor makes sense to always trim.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}