i965: Correctly use ABO count to trigger flagging of new surfaces.

This would have *almost never* actually been an issue, since other state
tends to get flagged at the same time as new ABOs -- but still bogus.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
1 file changed