Fix embarassing purify error due to length mismatch.
Fix embarassing purify error due to length mismatch.

BUG=NONE
TEST=PickleTest.EvilLengths
TBR=cpu

Review URL: http://codereview.chromium.org/149011

git-svn-id: http://src.chromium.org/svn/trunk/src@19255 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 4f6e0fadc0607968c659885de50010d6e7658fc0
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser