`NumberFormatException` in `empty-object`

See #176, release log:

• 69289b8 by @yegor256: Merge pull request #181 from h...
• 0397a0f by @h1alexbel: feat(#176): no underscore, imp...
• 6ce0b75 by @h1alexbel: feat(#176): use eo:lineno(@lin...
• bb606b9 by @h1alexbel: feat(#176): move to lint funcs
• db92595 by @h1alexbel: feat(#176): _lineno
• eb320e4 by @h1alexbel: fix(#176): simplified if test

Released by Rultor 2.0-SNAPSHOT, see build log