Issue 1193 - Fix thumbnails on youtube: do not hang blocked subdocument requests

src/plugin/PluginWbPassThrough.cpp

 #include "PluginStdAfx.h"
 
 #include "PluginWbPassThrough.h"
 #include "PluginClient.h"
 #include "PluginClientFactory.h"
 #ifdef SUPPORT_FILTER
 #include "PluginFilter.h"
 #endif
 #include "PluginSettings.h"
 #include "PluginClass.h"
@@ skipping 238 matching lines @@
     {
       m_shouldBlock = true;
       BaseClass::OnStart(szUrl, pOIProtSink, pOIBindInfo, grfPI, dwReserved, pTargetProtocol);
 
       m_spInternetProtocolSink->ReportProgress(BINDSTATUS_MIMETYPEAVAILABLE, L"text/html");
 
       //Here we check if we are running on Windows 8 Consumer Preview. 
       //For some reason on that environment the next line causes IE to crash
       if (CPluginSettings::GetInstance()->GetWindowsBuildNumber() != 8250)
       {
-        m_spInternetProtocolSink->ReportResult(INET_E_REDIRECTING, 301, L"res://mshtml.dll/blank.htm");

[Oleksandr, 2014/08/12 00:56:57]

The behavior here changed after the APP update in rev #644. Looks like
redirecting to res:// protocol is no longer an option. In that case request
hangs indefinitely. It causes problems on Youtube. The onload (or similar) event
is never triggered because of that hung download.

+        m_spInternetProtocolSink->ReportResult(INET_E_REDIRECT_FAILED, 0, szUrl);
       }
 
       return INET_E_REDIRECT_FAILED;
     } 
     if (((contentType == CFilter::contentTypeScript)) && (isBlocked)) 
     {
       m_shouldBlock = true;
       BaseClass::OnStart(szUrl, pOIProtSink, pOIBindInfo, grfPI, dwReserved, pTargetProtocol);
       m_spInternetProtocolSink->ReportProgress(BINDSTATUS_MIMETYPEAVAILABLE, L"text/javascript");
       m_spInternetProtocolSink->ReportResult(INET_E_REDIRECTING, 301, L"data:");
@@ skipping 125 matching lines @@
   return OnStart(szUrl, pOIProtSink, pOIBindInfo, grfPI,
     dwReserved, m_spInternetProtocol);
 }
 
  STDMETHODIMP WBPassthru::Read( /* [in, out] */ void *pv,/* [in] */ ULONG cb,/* [out] */ ULONG *pcbRead)
  {
    
    WBPassthruSink* pSink = GetSink();
    return pSink->Read(pv, cb, pcbRead);
  }