[Qt] Tap highlight attempted hidden several times

[Qt] Tap highlight attempted hidden several times
https://bugs.webkit.org/show_bug.cgi?id=82903

Patch by Allan Sandfeld Jensen <allan.jensen@nokia.com> on 2012-04-03
Reviewed by Kenneth Rohde Christiansen.

Do not reset GestureRecognizer if already reset, and do not
disable tap-highlight on touch-end if already reset.

* UIProcess/qt/QtTapGestureRecognizer.cpp:
(WebKit::QtTapGestureRecognizer::recognize):
(WebKit::QtTapGestureRecognizer::reset):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@113012 268f45cc-cd09-0410-ab3c-d52691b4dbfc