hash/delete.c: add declaration
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48967 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
hash/delete.c: add declaration
internal.h. [Bug #10623]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48967 b2dd03c8-39d4-4d8f-98ff-823fe69b080e