FunctionMetadata.py : if-none initialisation
FunctionMetadata.py : if-none initialisation

fixes https://github.com/coala-analyzer/coala/issues/946

CruiseDevice/coala,sophiavanvalkenburg/coala,nemaniarjun/coala,CruiseDevice/coala,swatilodha/coala,arush0311/coala,yashLadha/coala,jayvdb/coala,NalinG/coala,abhiroyg/coala,netman92/coala,scottbelden/coala,SambitAcharya/coala,meetmangukiya/coala,aptrishu/coala,dagdaggo/coala,Balaji2198/coala,NalinG/coala,svsn2117/coala,shreyans800755/coala,Balaji2198/coala,SambitAcharya/coala,NalinG/coala,Nosferatul/coala,SambitAcharya/coala,NalinG/coala,stevemontana1980/coala,scriptnull/coala,arafsheikh/coala,tltuan/coala,swatilodha/coala,arjunsinghy96/coala,NiklasMM/coala,Uran198/coala,impmihai/coala,incorrectusername/coala,djkonro/coala,d6e/coala,RJ722/coala,coala-analyzer/coala,sils1297/coala,aptrishu/coala,MariosPanag/coala,coala-analyzer/coala,yland/coala,scriptnull/coala,djkonro/coala,karansingh1559/coala,ayushin78/coala,arush0311/coala,sophiavanvalkenburg/coala,kartikeys98/coala,mr-karan/coala,CruiseDevice/coala,abhiroyg/coala,scottbelden/coala,Nosferatul/coala,dagdaggo/coala,tushar-rishav/coala,vinc456/coala,scottbelden/coala,sagark123/coala,scriptnull/coala,arush0311/coala,JohnS-01/coala,rimacone/testing2,rresol/coala,AbdealiJK/coala,Asalle/coala,sudheesh001/coala,vinc456/coala,incorrectusername/coala,sils1297/coala,NalinG/coala,ManjiriBirajdar/coala,meetmangukiya/coala,SambitAcharya/coala,scriptnull/coala,SanketDG/coala,meetmangukiya/coala,scriptnull/coala,abhiroyg/coala,SambitAcharya/coala,lonewolf07/coala,NiklasMM/coala,rimacone/testing2,yland/coala,coala/coala,lonewolf07/coala,Asnelchristian/coala,Asnelchristian/coala,rresol/coala,yashtrivedi96/coala,sudheesh001/coala,rresol/coala,refeed/coala,yashLadha/coala,aptrishu/coala,tltuan/coala,saurabhiiit/coala,SambitAcharya/coala,incorrectusername/coala,karansingh1559/coala,svsn2117/coala,impmihai/coala,d6e/coala,netman92/coala,AbdealiJK/coala,JohnS-01/coala,saurabhiiit/coala,swatilodha/coala,tltuan/coala,Asnelchristian/coala,tushar-rishav/coala,yashLadha/coala,NiklasMM/coala,netman92/coala,yland/coala,AbdealiJK/coala,stevemontana1980/coala,jayvdb/coala,ManjiriBirajdar/coala,MariosPanag/coala,Uran198/coala,MattAllmendinger/coala,d6e/coala,SambitAcharya/coala,sudheesh001/coala,arjunsinghy96/coala,AdeshAtole/coala,yashtrivedi96/coala,Uran198/coala,ayushin78/coala,impmihai/coala,sophiavanvalkenburg/coala,damngamerz/coala,coala-analyzer/coala,refeed/coala,saurabhiiit/coala,vinc456/coala,SanketDG/coala,damngamerz/coala,djkonro/coala,Shade5/coala,yashtrivedi96/coala,Asalle/coala,karansingh1559/coala,sagark123/coala,ayushin78/coala,kartikeys98/coala,Balaji2198/coala,shreyans800755/coala,dagdaggo/coala,AdeshAtole/coala,Shade5/coala,Asalle/coala,lonewolf07/coala,sagark123/coala,nemaniarjun/coala,coala/coala,refeed/coala,mr-karan/coala,MattAllmendinger/coala,tushar-rishav/coala,coala/coala,Shade5/coala,scriptnull/coala,MariosPanag/coala,JohnS-01/coala,jayvdb/coala,mr-karan/coala,arafsheikh/coala,sils1297/coala,arafsheikh/coala,svsn2117/coala,SanketDG/coala,RJ722/coala,kartikeys98/coala,arjunsinghy96/coala,nemaniarjun/coala,NalinG/coala,ManjiriBirajdar/coala,shreyans800755/coala,stevemontana1980/coala,AdeshAtole/coala,rimacone/testing2,RJ722/coala,scriptnull/coala,MattAllmendinger/coala,Nosferatul/coala,NalinG/coala,damngamerz/coala