* gc.c (rb_objspace_alloc, Init_heap): initialize
  oldmalloc_increase_limit at Init_heap.
  rb_objspace_alloc() is not called on some platforms.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44038 b2dd03c8-39d4-4d8f-98ff-823fe69b080e