fixed build on Windows

modules/core/src/precomp.hpp

@@ -106,7 +106,7 @@ extern const uchar g_Saturate8u[];
 
 #if defined WIN32 || defined _WIN32
 void deleteThreadAllocData();
-void deleteThreadRNGData();
+void deleteThreadData();
 #endif
 
 template<typename T1, typename T2=T1, typename T3=T1> struct OpAdd

modules/core/src/system.cpp

@@ -716,7 +716,7 @@ BOOL WINAPI DllMain( HINSTANCE, DWORD  fdwReason, LPVOID )
     if( fdwReason == DLL_THREAD_DETACH || fdwReason == DLL_PROCESS_DETACH )
     {
         cv::deleteThreadAllocData();
-        cv::deleteThreadRNGData();
+        cv::deleteThreadData();
     }
     return TRUE;
 }