Fix DCHECK in ScopeInfo::Print().

Fix DCHECK in ScopeInfo::Print().

Committed: https://crrev.com/e874579f281ec200273aac90cba438e9ec0403bf
Cr-Commit-Position: refs/heads/master@{#30978}

[bnoordhuis, 2015-09-26 13:45:57]

ben@strongloop.com changed reviewers:
+ machenbach@chromium.org

[Michael Achenbach, 2015-09-28 08:47:34]

Please find a code owner. If you found my name with git blame, it's probably
just a revert of something...

[bnoordhuis, 2015-09-28 13:37:06]

ben@strongloop.com changed reviewers:
+ rossberg@chromium.org
- machenbach@chromium.org

[bnoordhuis, 2015-09-28 13:38:18]

On 2015/09/28 08:47:34, Michael Achenbach wrote:
> Please find a code owner. If you found my name with git blame, it's probably
> just a revert of something...

`git-cl owners` actually, but I've noticed it almost always comes up with your
name first.  I've assigned someone else.

[rossberg, 2015-09-28 13:41:00]

lgtm

[bnoordhuis, 2015-09-28 13:48:42]

The CQ bit was checked by ben@strongloop.com

[commit-bot: I haz the power, 2015-09-28 13:48:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1369913002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1369913002/1

[commit-bot: I haz the power, 2015-09-28 14:12:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-28 14:13:06]

Patchset 1 (id:??) landed as
https://crrev.com/e874579f281ec200273aac90cba438e9ec0403bf
Cr-Commit-Position: refs/heads/master@{#30978}