Re-introduce check for empty handles after calling toString when converting a JavaScript object to a WebCore string.
Re-introduce check for empty handles after calling toString when
converting a JavaScript object to a WebCore string.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/115771

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@16870 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