Fix CI - unused vars #2268

Job	Run time
clang-format-check	17s
address-sanitizer	29m 30s
linux-gcc-4_4	18m 47s
mac-os-build-clang	18m 5s
mac-os-build-gcc	18m 45s
mac-os-m1-build-clang	28m 37s
static-build-mac	36m 24s
thread-sanitizer	29m 3s
undefined-behavior-sanitizer	28m 46s
arm64-cross-compilation-mbedtls	2m 45s
arm64-cross-compilation-mbedtls-static	2m 10s
mbedtls-mac-os-build-clang	25m 37s
mbedtls-ubuntu-clang	25m 53s
mbedtls-ubuntu-gcc	28m 53s
mbedtls-ubuntu-gcc-11	27m 59s
mbedtls-ubuntu-gcc-4_4-build	2m 24s
mbedtls-ubuntu-gcc-static	2m 19s
sample-check	4m 38s
sample-check-no-data-channel	4m 46s
static-build-linux	18m 8s
ubuntu-os-build	29m 27s
windows-msvc-openssl	26m 34s
arm32-cross-compilation	4m 47s
arm32-cross-compilation-mbedtls	2m 52s
arm32-cross-compilation-mbedtls-static	1m 59s
arm64-cross-compilation	4m 46s
linux-aarch64-cross-compilation	4m 41s
	7h 8m 52s

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