Share code for data path retrieval in engine and plugin

src/plugin/PluginSettings.cpp

 #include "PluginStdAfx.h"
 
 #include <Wbemidl.h>
 #include <time.h>
 #include "PluginIniFileW.h"
 #include "PluginIniFile.h"
 #include "PluginSettings.h"
 #include "PluginDictionary.h"
 #include "PluginClient.h"
 #include "PluginChecksum.h"
@@ skipping 293 matching lines @@
       m_isDirty = true;
       DEBUG_SETTINGS("Settings::Configuration plugin update version:" + it->second);
     }
   }
 
   return true;
 }
 
 CString CPluginSettings::GetDataPath(const CString& filename)
 {
-  std::wstring path = ::GetAppDataPath() + L"\\" + filename;
+  std::wstring path = ::GetAppDataPath() + L"\\" + static_cast<LPCWSTR>(filename);
   return CString(path.c_str());
 }
 
 CString CPluginSettings::GetSystemLanguage()
 {
   CString language;
   CString country;
 
   DWORD bufSize = 256;
   int ccBuf = GetLocaleInfo(LOCALE_SYSTEM_DEFAULT, LOCALE_SISO639LANGNAME, language.GetBufferSetLength(bufSize), bufSize);
@@ skipping 1149 matching lines @@
     return CString(L"");
 }
 
 
 void CPluginSettings::RefreshFilterlist()
 {
   CPluginClient::GetInstance()->UpdateAllSubscriptions();
 }
 
 #endif // SUPPORT_WHITELIST