merge revision(s) 54105,54108,54136,54138: [Backport #12188]
* marshal.c (r_object0): Fix Marshal crash for corrupt extended object. * marshal.c (r_object0): raise ArgumentError when linking to undefined object.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@54333 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 54105,54108,54136,54138: [Backport #12188]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@54333 b2dd03c8-39d4-4d8f-98ff-823fe69b080e