[Trivial] Silence compiler warning #5855

Job	Run time
CI-Cuda-Host (g++, Release, cuda, serial)	41m 18s
CI-Cuda-Host (g++, Release, cuda, mpi)	40m 46s
CI-Cuda-Host (g++, Release, host, serial)	11m 28s
CI-Cuda-Host (g++, Release, host, mpi)	11m 56s
CI-Rocm-HIP (hipcc, Release, hip, serial)	31m 43s
CI-Cuda-Host (g++, Debug, cuda, serial)	1h 14m 43s
CI-Rocm-HIP (hipcc, Release, hip, mpi)	35m 4s
CI-Cuda-Host (g++, Debug, cuda, mpi)	1h 15m 29s
CI-Rocm-HIP (hipcc, Debug, hip, serial)	54m 14s
CI-Cuda-Host (g++, Debug, host, serial)	10m 20s
CI-Rocm-HIP (hipcc, Debug, hip, mpi)	54m 53s
CI-Cuda-Host (g++, Debug, host, mpi)	10m 58s
CI-Cuda-Host (clang++-15, Release, cuda, serial)	26m 5s
CI-Cuda-Host (clang++-15, Release, cuda, mpi)	25m 45s
CI-Cuda-Host (clang++-15, Release, host, serial)	9m 44s
CI-Cuda-Host (clang++-15, Release, host, mpi)	10m 41s
CI-Cuda-Host (clang++-15, Debug, host, serial)	7m 40s
CI-Cuda-Host (clang++-15, Debug, host, mpi)	7m 38s
	9h 0m 25s

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