Tell BBPextend and BBPinithash which free list should really get an entry. When BBPextend is called from BBPinsert, we need a free entry in the free list identified by idx.  If we don't pass this idx to BBPinithash which initializes the free lists, we may well end up with an empty free list and then a failed assertion a few lines down in BBPinsert.
Tell BBPextend and BBPinithash which free list should really get an entry.
When BBPextend is called from BBPinsert, we need a free entry in the
free list identified by idx.  If we don't pass this idx to BBPinithash
which initializes the free lists, we may well end up with an empty
free list and then a failed assertion a few lines down in BBPinsert.

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