contrib/pgbench bugfix

I found a buffer overflow bug in contrib/pgbench.
This occures when -c >= 2.

The type of 'state' is CState*, so we should use state+1 or &state[1],
not state + sizeof(*state)

*** pgbench.c Mon Jul 31 13:18:45 2006
--- pgbench.fixed.c Mon Jul 31 13:18:10 2006
*************** main(int argc, char **argv)
*** 1344,1350 ****
exit(1);
}

! memset(state + sizeof(*state), 0, sizeof(*state) * (nclients - 1));

for (i = 1; i < nclients; i++)
{
--- 1344,1350 ----
exit(1);
}

! memset(state + 1, 0, sizeof(*state) * (nclients - 1));

for (i = 1; i < nclients; i++)
{

Regards,
---
ITAGAKI Takahiro
NTT Open Source Software Center