* gc.c (gc_stat_internal): return size_t value instead of VALUE
  and remove `out' parameter.
* gc.c: add braces for `if' statements.
* gc.c (gc_stat_internal): fix comment.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46623 b2dd03c8-39d4-4d8f-98ff-823fe69b080e