Style/VariableNumber is broken for two digit numbers

[ptarjan]

Expected behavior

$ cat a.rb
a_42 = 1
$ rubocop a.rb --only Style/VariableNumber
Inspecting 1 file
.

1 file inspected, no offenses detected

Actual behavior

$ cat a.rb
a_42 = 1
$ rubocop a.rb --only Style/VariableNumber
Inspecting 1 file
C

Offenses:

a.rb:1:1: C: Style/VariableNumber: Use snake_case for variable numbers.
a_42 = 1
^^^^

1 file inspected, 1 offense detected

Steps to reproduce the problem

See above

RuboCop version

$ rubocop -V
0.44.1 (using Parser 2.3.1.4, running on ruby 2.2.5 x86_64-darwin15)

[Ana06]

This issue can be closed: #3653 😉