message: Avoid Grid dim zero
diff: @@ -118,6 +118,9 @@ namespace __merge_sort
  const size_type count = static_cast<size_type>(thrust::distance(keys_first, keys_last));
  + if(count == 0)
  + return;
  +
  size_t storage_size = 0;
  hipStream_t stream = hip_rocprim::stream(policy);
  bool debug_sync = THRUST_HIP_DEBUG_SYNC_FLAG;
  @@ -281,6 +284,9 @@ namespace __radix_sort
  const size_type count = static_cast<size_type>(thrust::distance(keys_first, keys_last));
  + if(count == 0)
  + return;
  +
  size_t storage_size = 0;
  hipStream_t stream = hip_rocprim::stream(policy);
  bool debug_sync = THRUST_HIP_DEBUG_SYNC_FLAG;
  