GitLab

Made `RecordParsed::rdata_` nullable but missed a deref in
`RecordParsed::IsEqual()`.

Original change's description:
> Revert "Ignore unknown record types in DNS responses"
>
> This reverts commit e4620991.
>
> Reason for revert: Suspected for causing crashes on Windows/Intel.
> For more info see bug.
>
> Bug: 1148269
>
> Original change's description:
> > Ignore unknown record types in DNS responses
> >
> > Previously worked only for address requests. Other request types (e.g.
> > HTTPS), on seeing any unrecognized (and therefore unparsable) record
> > type in the response, would fail the whole response as malformed.
> >
> > Bug: 1147247
> > Change-Id: Icd9e5ab2e39cf09ffe7c3945b011ebf1d4b45778
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2529619
> > Commit-Queue: Eric Orth <ericorth@chromium.org>
> > Auto-Submit: Eric Orth <ericorth@chromium.org>
> > Reviewed-by: Matt Menke <mmenke@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#826462}
>
> TBR=mmenke@chromium.org,ericorth@chromium.org
>
> Change-Id: I03ea912d1a9c8a01be3d84a3f4d417c385f97c2d
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: 1147247
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2533548
> Reviewed-by: Jamie Madill <jmadill@chromium.org>
> Commit-Queue: Jamie Madill <jmadill@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#826873}


Bug: 1148269,1147247
Fixed: 1147247
Change-Id: I312c095e519c62d730e5fb6165833727f5d913be
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2534629
Commit-Queue: Eric Orth <ericorth@chromium.org>
Commit-Queue: Dan McArdle <dmcardle@chromium.org>
Auto-Submit: Eric Orth <ericorth@chromium.org>
Reviewed-by: Dan McArdle <dmcardle@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827004}