zstd error code printing with SIZE_T_PRINTF
Once both autotools (#43357) and meson (#43390) builds provide SIZE_T_PRINTF, use it in printing ztsd error codes, replacing current ugly cast to 'long' regardless for providing same type, and format specifier, in all environments.
Once both autotools (#43357) and meson (#43390) builds provide SIZE_T_PRINTF, use it in printing ztsd error codes, replacing current ugly cast to 'long' regardless for providing same type, and format specifier, in all environments.