2009-03-18  Anders Carlsson  <andersca@apple.com>

        Reviewed by Darin Adler.

        <rdar://problem/6504776> 
        CrashTracer: [USER] 188 crashes in Safari at com.apple.WebCore • WTF::HashTableIterator<WTF::RefPtr<WebCore::ResourceLoader>, ...

        Return early in case calling the client ends up spinning the run loop and completing/cancelling the load.
        
        * loader/NetscapePlugInStreamLoader.cpp:
        (WebCore::NetscapePlugInStreamLoader::didCancel):

WebKit/mac:

2009-03-18  Anders Carlsson  <andersca@apple.com>

        Reviewed by Darin Adler.

        <rdar://problem/6504776> 
        CrashTracer: [USER] 188 crashes in Safari at com.apple.WebCore • WTF::HashTableIterator<WTF::RefPtr<WebCore::ResourceLoader>, ...
        
        If the m_pluginView member was zeroed out as a result of making a call into the plug-in, the pluginFunctionCallDepth would be off
        causing the plug-in never to be stopped. Simplify the code by using a RAII object.

        * Plugins/WebBaseNetscapePluginStream.mm:
        (PluginStopDeferrer::PluginStopDeferrer):
        (PluginStopDeferrer::~PluginStopDeferrer):
        (WebNetscapePluginStream::startStream):
        (WebNetscapePluginStream::wantsAllStreams):
        (WebNetscapePluginStream::destroyStream):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@41813 268f45cc-cd09-0410-ab3c-d52691b4dbfc