chg: [backscatter.io] blind fix regarding undefined value
chg: [backscatter.io] blind fix regarding undefined value

amuehlem/misp-modules,amuehlem/misp-modules,amuehlem/misp-modules,MISP/misp-modules,VirusTotal/misp-modules,MISP/misp-modules,VirusTotal/misp-modules,VirusTotal/misp-modules,MISP/misp-modules