added cast to fix Windows compilation: sql_optimizer.mx:393: "initializing" : conversion from "wrd" to "oid", possible loss of data
added cast to fix Windows compilation:
sql_optimizer.mx:393: "initializing" : conversion from "wrd" to "oid", possible loss of data

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb