- http://bugzilla.opendarwin.org/show_bug.cgi?id=7808
        Assertion failure in -[WebBaseNetscapePluginStream dealloc] when requesting an invalid URL

WebKit:
        * Plugins/WebNetscapePluginStream.m:
        (-[WebNetscapePluginStream initWithRequest:pluginPointer:notifyData:sendNotification:]):
        Remove the early return when requesting an invalid (unsupported) URL.

WebKitTools:
        * DumpRenderTree/TestNetscapePlugIn.subproj/PluginObject.c:
        (pluginInvoke): treat getURL() with one parameter as if the second parameter were NULL -
        should open a new stream and deliver the data to the current instance.

LayoutTests:
        * plugins/get-empty-url-expected.txt: Added.
        * plugins/get-empty-url.html: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@15337 268f45cc-cd09-0410-ab3c-d52691b4dbfc