Added nil test to geom.mbr() call. This fixes bug 2814.
Added nil test to geom.mbr() call.
This fixes bug 2814.

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