* gc.c (objspace_malloc_increase): should not invoke
  garbage_collect_with_gvl() here on non-ruby threads.
  Should just ignore the malloc_increase.
  This issue is pointed by Eric Wong [ruby-core:61519].



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45370 b2dd03c8-39d4-4d8f-98ff-823fe69b080e