Check the hint table exists before using.

Check the hint table exists before using.

It's possible for the hint table to not exist event though we have a hint key
in the object database. If the table does not exist then return false from
CheckHIntTables().

BUG=pdfium:512
Committed: https://pdfium.googlesource.com/pdfium/+/0687e76dc259c678b3f29a6608331f07ffd8f1e2

[dsinclair, 2016-06-07 16:54:43]

dsinclair@chromium.org changed reviewers:
+ thestig@chromium.org, tsepez@chromium.org

[dsinclair, 2016-06-07 16:54:44]

PTAL.

[Tom Sepez, 2016-06-07 17:07:07]

lgtm

[dsinclair, 2016-06-07 17:43:26]

The CQ bit was checked by dsinclair@chromium.org

[commit-bot: I haz the power, 2016-06-07 17:43:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2047723002/1

[commit-bot: I haz the power, 2016-06-07 17:43:45]

Description was changed from

==========
Check the hint table exists before using.

It's possible for the hint table to not exist event though we have a hint key
in the object database. If the table does not exist then return false from
CheckHIntTables().

BUG=pdfium:512
==========

to

==========
Check the hint table exists before using.

It's possible for the hint table to not exist event though we have a hint key
in the object database. If the table does not exist then return false from
CheckHIntTables().

BUG=pdfium:512

Committed:
https://pdfium.googlesource.com/pdfium/+/0687e76dc259c678b3f29a6608331f07ffd8...
==========

[commit-bot: I haz the power, 2016-06-07 17:43:46]

Committed patchset #1 (id:1) as
https://pdfium.googlesource.com/pdfium/+/0687e76dc259c678b3f29a6608331f07ffd8...

[Lei Zhang, 2016-06-08 01:40:53]

https://codereview.chromium.org/2047723002/diff/1/core/fpdfapi/fpdf_parser/cp...
File core/fpdfapi/fpdf_parser/cpdf_data_avail.cpp (right):

https://codereview.chromium.org/2047723002/diff/1/core/fpdfapi/fpdf_parser/cp...
core/fpdfapi/fpdf_parser/cpdf_data_avail.cpp:751: if (!pHintStreamRange)
In the bug, you mentioned this code infinite loops with the given test case. You
probably should add: m_docStatus = PDF_DATAAVAIL_ERROR - same treatment as if
the "H" key does not exist on line 739.