Remove unnecessary BATextend and erroneous assert. The BATextend can fail, and we want proper error handling if it does. Moreover, just a few lines lower we do another BATextend with proper error handling.
Remove unnecessary BATextend and erroneous assert.
The BATextend can fail, and we want proper error handling if it does.
Moreover, just a few lines lower we do another BATextend with proper
error handling.

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