Fixed warning 4456 in doc\examples\mtapi/mtapi_cpp_wait_task-snippet.h…

Fixed warning 4456 in doc\examples\mtapi/mtapi_cpp_wait_task-snippet.h (declaration of 'status' hides previous local declaration)

doc/examples/mtapi/mtapi_cpp_wait_task-snippet.h

-    mtapi_status_t status = task.Wait(MTAPI_INFINITE);
-    if (status != MTAPI_SUCCESS) {
-      printf("task failed with error: %d\n\n", status);
-      exit(status);
+    mtapi_status_t task_status = task.Wait(MTAPI_INFINITE);
+    if (task_status != MTAPI_SUCCESS) {
+      printf("task failed with error: %d\n\n", task_status);
+      exit(task_status);
     }
     }