[ruby/irb] Fix newline depth with multiple braces

This commit fixes the check_newline_depth_difference method to multiple
open braces on one line into account. Before this change we were
subtracting from the depth in check_newline_depth_difference on
every open brace. This is the right thing to do if the opening and
closing brace are on the same line. For example in a method definition we
have an opening and closing parentheses we want to add 1 to our depth,
and then remove it.

```
def foo()
end
```

However this isn't the correct behavior when the brace spans multiple
lines. If a brace spans multiple lines we don't want to subtract from
check_newline_depth_difference and we want to treat the braces the same
way as we do `end` and allow check_corresponding_token_depth to pop the
correct depth.

Example of bad behavior:

```
def foo()
  [
  ]
puts 'bar'
end
```

Example of desired behavior:

```
def foo()
  [
  ]
  puts 'bar'
end
```

https://github.com/ruby/irb/commit/7dc8af01e0

0 files changed, 0 insertions, 0 deletions