xidlist: removed Assertion & Abort message from stable output
xidlist: removed Assertion & Abort message from stable output

IMHO, an Assertion and Abort can never be correct.

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