* debug.c (SET_WHEN): Don't declare debug variables here.
  ruby_initial_gc_stress_ptr is changed int* to VALUE* at r41406.

* internal.h (ruby_initial_gc_stress_ptr): Declared.
  (ruby_enable_coredump): Ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48477 b2dd03c8-39d4-4d8f-98ff-823fe69b080e