A little cleanup from my last checkin.  Always check if an Event is really a MouseEvent or a KeyboardEvent
        before casting it.

        * html/HTMLAnchorElement.cpp: (WebCore::HTMLAnchorElement::defaultEventHandler):
        * html/HTMLSelectElement.cpp:
        (WebCore::HTMLSelectElement::menuListDefaultEventHandler):
        (WebCore::HTMLSelectElement::listBoxDefaultEventHandler):
        * html/HTMLTextFieldInnerElement.cpp:
        (WebCore::HTMLSearchFieldResultsButtonElement::defaultEventHandler):
        (WebCore::HTMLSearchFieldCancelButtonElement::defaultEventHandler):
        * ksvg2/svg/SVGAElement.cpp: (WebCore::SVGAElement::defaultEventHandler):
        * page/ContextMenuController.cpp: (WebCore::ContextMenuController::handleContextMenuEvent):
        * rendering/RenderFrameSet.cpp: (WebCore::RenderFrameSet::userResize):
        * rendering/RenderSlider.cpp: (WebCore::HTMLSliderThumbElement::defaultEventHandler):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@20724 268f45cc-cd09-0410-ab3c-d52691b4dbfc