ocl(win32): bypass deallocate() during process termination

modules/core/src/ocl.cpp

@@ -4779,6 +4779,10 @@ public:
 
     void deallocate_(UMatData* u) const
     {
+#ifdef _WIN32
+        if (cv::__termination)  // process is not in consistent state (after ExitProcess call) and terminating
+            return;             // avoid any OpenCL calls
+#endif
         if(u->tempUMat())
         {
             CV_Assert(u->origdata);