fix compiler warning #100

Job	Run time
macosx	2m 16s
msys2 - mingw64	2m 39s
coverage - measure	1m 37s
lint	1m 30s
sanitizer - arm32v7/debian:trixie	2m 19s
sanitizer - arm64v8/debian:trixie	1m 58s
sanitizer - debian:trixie	1m 21s
linux - debian:bookworm	1m 55s
linux - arm32v7/debian:trixie	2m 34s
linux - debian:trixie	1m 16s
linux - arm64v8/debian:bookworm	1m 52s
linux - arm64v8/debian:trixie	2m 0s
linux - arm32v7/debian:bookworm	1m 43s
linux - ubuntu:noble	1m 42s
	26m 42s

Provide feedback