bench_rand.c not compiling with RAND=CALL

[jgdumas]

In file bench/bench_rand.c

65: rand_bytes(buffer, k);

error: ‘k’ was not declared in this scope

Replace k, by sizeof(buffer) ?

[dfaranha]

Fixed with 41c8f80c42221f72e3c66488fbf52f711de12b2e, thanks for notifying!