b3b4bdcda4
When building with `CMake` (especially the targets `valkey-cli`, `valkey-server` and `valkey-benchmark`) it is possible to have a successful build while having warnings. This PR fixes this - which is aligned with how the `Makefile` is working today: - Enable `-Wall` + `-Werror` for valkey targets - Fixed warning in valkey-cli:jsonStringOutput method Signed-off-by: Eran Ifrah <eifrah@amazon.com>