fix stats feedback when effective reivers list is empty
fix stats feedback when effective reivers list is empty

flyser/AutobahnPython,Geoion/AutobahnPython,rapyuta/autobahn_rce,inirudebwoy/AutobahnPython,hzruandd/AutobahnPython,Jenselme/AutobahnPython,RyanHope/AutobahnPython,magnux/AutobahnPython,markope/AutobahnPython,ewollesen/AutobahnPython,crossbario/autobahn-python,dash-dash/AutobahnPython,oberstet/autobahn-python,tomwire/AutobahnPython,boonedox/AutobahnPython,meejah/AutobahnPython,iffy/AutobahnPython,iffy/AutobahnPython,flyser/AutobahnPython,cachedout/AutobahnPython,oberstet/autobahn-python,magnux/AutobahnPython,ewollesen/AutobahnPython,claws/AutobahnPython,dash-dash/AutobahnPython,mcfletch/AutobahnPython,wrapp/AutobahnPython,dash-dash/AutobahnPython,leedm777/AutobahnPython,flyser/AutobahnPython,rapyuta/autobahn_rce,rapyuta/autobahn_rce,D3f0/AutobahnPython,schoonc/AutobahnPython,bencharb/AutobahnPython,crossbario/autobahn-python,D3f0/AutobahnPython,iffy/AutobahnPython,wrapp/AutobahnPython,tavendo/AutobahnPython,oberstet/autobahn-python,cachedout/AutobahnPython,nucular/AutobahnPython,leedm777/AutobahnPython,luhn/AutobahnPython,claws/AutobahnPython,boonedox/AutobahnPython,jvdm/AutobahnPython,leedm777/AutobahnPython,mcfletch/AutobahnPython,rapyuta/autobahn_rce,D3f0/AutobahnPython,boonedox/AutobahnPython,iffy/AutobahnPython,wrapp/AutobahnPython,crossbario/autobahn-python,dash-dash/AutobahnPython,ttimon7/AutobahnPython