fix PartitionDescriptor warnings

11 jobs for master in 5 minutes and 13 seconds (queued for 1 second)
Status Job ID Name Coverage
  Static Test
passed #849236
linux elsa clang
clang-format

00:00:16

passed #849237
linux elsa clang
clang-tidy

00:00:24

 
  Compile
passed #849268
clang elsa linux
build-clang8

00:00:19

passed #849241
linux elsa gcc cuda
build-cuda92

00:00:23

passed #849239
linux elsa gcc
build-gcc9

00:00:20

passed #849238
linux elsa
build-ubuntu

00:00:19

failed #849240
linux elsa clang
build-clang8

00:00:14

 
  Test
passed #849244
linux elsa clang
test-clang8

00:03:29

passed #849245
linux elsa gcc cuda
test-cuda92

00:04:04

passed #849243
linux elsa gcc
test-gcc9

00:04:01

passed #849242
linux elsa
test-ubuntu

00:03:33