Coverity: Check the return value of CryptDestroyHash and CryptReleaseContext.
Coverity: Check the return value of CryptDestroyHash and CryptReleaseContext.

CID=6309
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/243103

git-svn-id: http://src.chromium.org/svn/trunk/src@28144 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: c5dd0bb2f59da05690ac18261a818adaadfcfa02
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