bugfix for stethoscope: bail out when not able to connect to mserver.
bugfix for stethoscope: bail out when not able to connect to mserver.

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