Fix uninitialized warning in benchmark, no functional impact
@@ -29,6 +29,7 @@ int main(int argc, char *argv[])
/* Warmup to preallocate internal buffers. */
size = bufsize;
+ old_size = size;
encode(BM, buf, &size);
t1 = elapsed_realtime();
for (i = 0; i < rep; ++i) {
