Ruby: don't make a scope for "Class.new..." with no block

[masatake]

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (a454f33) 83.04% compared to head (692a024) 83.04%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3733   +/-   ##
=======================================
  Coverage   83.04%   83.04%           
=======================================
  Files         227      227           
  Lines       55175    55184    +9     
=======================================
+ Hits        45819    45828    +9     
  Misses       9356     9356           

Impacted Files	Coverage Δ
parsers/ruby.c	98.54% <100.00%> (+0.02%)	:arrow_up:

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.