better fix of the compiler warning #6854

Job	Run time
telemetry-setup	8s
check-nightly-ci	4s
checks / other-checks	40s
checks / check-style	1m 20s
devcontainer / amd64, 12.5, conda	1h 16m 40s
changed-files / Check changed files	12s
devcontainer / amd64, 12.5, pip	37m 7s
conda-cpp-build	0s
wheel-build-libcugraph	0s
conda-cpp-checks	0s
conda-cpp-tests	0s
conda-python-build	0s
wheel-build-pylibcugraph	0s
docs-build	0s
conda-notebook-tests	0s
conda-python-tests	0s
wheel-build-cugraph	0s
wheel-tests-pylibcugraph	0s
wheel-tests-cugraph	0s
pr-builder / run	1s
telemetry-summarize	16s
	1h 56m 28s

Provide feedback