* gc.c: GC::Profiler's sweeping time is accumulated all slot
  sweeping time. At lazy GC, GC::Profiler makes new record entry
  for each lazy_sweep(). In this change, accumulating all
  slot_sweep() time.
  And change indentation.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40876 b2dd03c8-39d4-4d8f-98ff-823fe69b080e