Make sure IE and Engine are actually being closed by custom action

src/plugin/AdblockPlusClient.cpp

 #include "PluginStdAfx.h"
 #include "PluginSettings.h"
 #include "PluginSystem.h"
 #include "PluginFilter.h"
 #include "PluginClientFactory.h"
 #include "PluginMutex.h"
 #include "PluginClass.h"
 
 #include "AdblockPlusClient.h"
 
@@ skipping 495 matching lines @@
 bool CAdblockPlusClient::TogglePluginEnabled()
 {
   DEBUG_GENERAL("TogglePluginEnabled");
   Communication::InputBuffer response;
   if (!CallEngine(Communication::PROC_TOGGLE_PLUGIN_ENABLED, response)) 
     return false;
   bool currentEnabledState;
   response >> currentEnabledState;
   return currentEnabledState;
 }
+
 std::wstring CAdblockPlusClient::GetHostFromUrl(const std::wstring& url)
 {
   DEBUG_GENERAL("GetHostFromUrl");
   Communication::OutputBuffer request;
   request << Communication::PROC_GET_HOST << ToUtf8String(url);
 
   Communication::InputBuffer response;
   if (!CallEngine(request, response)) 
     return L"";
   std::string host;
   response >> host;
   return ToUtf16String(host);
 }