Small Bugfix: Prevent division by zero #4814

Job	Run time
CI-Rocm-HIP (hipcc, Release, hip, serial)	32m 42s
CI-Cuda-Host (g++, Release, cuda, serial)	38m 41s
CI-Rocm-HIP (hipcc, Release, hip, mpi)	31m 48s
CI-Cuda-Host (g++, Release, cuda, mpi)	40m 10s
CI-Rocm-HIP (hipcc, Debug, hip, serial)	53m 49s
CI-Cuda-Host (g++, Release, host, serial)	10m 56s
CI-Rocm-HIP (hipcc, Debug, hip, mpi)	53m 55s
CI-Cuda-Host (g++, Release, host, mpi)	11m 17s
CI-Cuda-Host (g++, Debug, cuda, serial)	1h 8m 59s
CI-Cuda-Host (g++, Debug, cuda, mpi)	1h 11m 34s
CI-Cuda-Host (g++, Debug, host, serial)	9m 56s
CI-Cuda-Host (g++, Debug, host, mpi)	10m 14s
CI-Cuda-Host (clang++-15, Release, cuda, serial)	25m 9s
CI-Cuda-Host (clang++-15, Release, cuda, mpi)	25m 18s
CI-Cuda-Host (clang++-15, Release, host, serial)	9m 34s
CI-Cuda-Host (clang++-15, Release, host, mpi)	9m 34s
CI-Cuda-Host (clang++-15, Debug, host, serial)	7m 25s
CI-Cuda-Host (clang++-15, Debug, host, mpi)	7m 25s
	8h 38m 26s

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