valgrind: Add a suppression for a hunspell memory leak during the SpellCheckStrings_EN_US test.
valgrind: Add a suppression for a hunspell memory leak during the SpellCheckStrings_EN_US test.

TBR=dank
BUG=18254
TEST=Watch the linux valgrind bot turn green
Review URL: http://codereview.chromium.org/159764

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@22263 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser