Fix/casting conversion warnings #2912

Job	Run time
build-mingw (windows-2022, mingw64)	2m 14s
build-macos (macos-13)	38s
build-mingw (windows-2022, ucrt64)	1m 33s
build-linux (jammy, 96b_carbon)	1m 11s
build-macos (macos-14)	23s
build-macos (macos-13, gcc@11)	1m 15s
build-mingw (windows-2022, clang64)	2m 27s
build-linux (jammy, blackpill-f401cc)	30s
build-macos (macos-latest)	23s
build-macos (macos-13, gcc@12)	1m 7s
build-linux (jammy, blackpill-f401ce)	36s
build-macos (macos-13, gcc@13)	1m 0s
build-linux (jammy, blackpill-f411ce)	2m 10s
build-msvc (meson, windows-2022)	51s
build-macos (macos-13, gcc@14)	1m 12s
size-diff	1m 25s
build-linux (jammy, bluepill)	32s
build-macos (macos-14, gcc@11)	42s
build-linux (jammy, ctxlink)	30s
build-macos (macos-14, gcc@12)	42s
build-linux (jammy, f072)	1m 21s
build-macos (macos-14, gcc@13)	48s
build-linux (jammy, f3)	2m 23s
build-macos (macos-14, gcc@14)	34s
build-linux (jammy, f4discovery)	58s
build-linux (jammy, hydrabus)	2m 49s
build-linux (jammy, launchpad-icdi)	1m 12s
build-linux (jammy, native)	48s
build-linux (jammy, native-uncommon)	31s
build-linux (jammy, native-st-clones)	36s
build-linux (jammy, native-riscv)	1m 7s
build-linux (jammy, native-remote)	35s
build-linux (jammy, stlink)	47s
build-linux (jammy, stlinkv3)	40s
build-linux (jammy, swlink)	1m 31s
	38m 1s

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