Ruby

insns.def: cache nil const

• insns.def (getinlinecache): Qnil is a valid value as a constant.
  this can be observable when accessing a deprecated constant
  which is nil. non-nil constant is warned just once for each
  location, but every time if it is nil.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62350 b2dd03c8-39d4-4d8f-98ff-823fe69b080e