Issue #276 - eliminate CString from GetBrowserLanguage

src/plugin/Plugin.cpp

 #include "PluginStdAfx.h"
 
 #include "Plugin.h"
 #ifdef _WIN64
 #include "../../build/x64/AdblockPlus_i.c"
 #else
 #include "../../build/ia32/AdblockPlus_i.c"
 #endif
 
 #include "PluginClass.h"
@@ skipping 56 matching lines @@
 STDAPI DllCanUnloadNow(void)
 {
   LONG count = _Module.GetLockCount();
   if (_Module.GetLockCount() == 0)
   {
     if (CPluginSettings::s_instance != NULL)
     {
       delete CPluginSettings::s_instance;
     }
 
-
-    if (CPluginSystem::s_instance != NULL)
-    {
-      delete CPluginSystem::s_instance;
-    }
-
     if (CPluginClass::s_mimeFilter != NULL)
     {
       CPluginClass::s_mimeFilter->Unregister();
       CPluginClass::s_mimeFilter = NULL;
     }
 
     _CrtDumpMemoryLeaks();
   }
   return (_Module.GetLockCount() == 0) ? S_OK : S_FALSE;
 }
 
 STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv)
 {
   return _Module.GetClassObject(rclsid, riid, ppv);
 }
 
 STDAPI DllRegisterServer(void)
 {
   return _Module.RegisterServer(TRUE);
 }
 
 STDAPI DllUnregisterServer(void)
 {
   return _Module.UnregisterServer(TRUE);
 }
 
 void InitPlugin(bool isInstall)
 {
-  CPluginSystem* system = CPluginSystem::GetInstance();
-
   CPluginSettings* settings = CPluginSettings::GetInstance();
 
   if (isInstall)
   {
     DEBUG_GENERAL(
       L"================================================================================\nINSTALLER " +
       CString(IEPLUGIN_VERSION) +
       L"\n================================================================================")
   }
   else
@@ skipping 16 matching lines @@
 EXTERN_C void STDAPICALLTYPE OnInstall(MSIHANDLE hInstall, MSIHANDLE tmp)
 {
   InitPlugin(true);
 }
 
 // Called from updater
 EXTERN_C void STDAPICALLTYPE OnUpdate(void)
 {
   InitPlugin(false);
 }