Backport #11150: Backport 49095 into ruby 2.2

• Status: Closed
• Assignee: nagachika (Tomoyuki Chikanaga)

[usa (Usaku NAKAMURA)]

See #11144 for details.

[usa (Usaku NAKAMURA)]

• Copied from Issue #11144 added

[usa (Usaku NAKAMURA)]

• Status changed from Open to Assigned

[nagachika (Tomoyuki Chikanaga)]

• Status changed from Assigned to Closed

Applied in changeset r50544.

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merge revision(s) 49095: [Backport #11150]

* lib/resolv.rb (Resolv::DNS::Label::Str#==): Check class equality.
  (Resolv::DNS::Name#initialize): Normalize labels as
  Resolv::DNS::Label::Str objects.