fix: Default to 0 when no distribution is specified
fix: Default to 0 when no distribution is specified

The current behavior conducted to set distribution to -1 in the returned json, and raise an 'Undefined index' notice

MISP/MISP,FIRSTdotorg/MISP,FIRSTdotorg/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,FIRSTdotorg/MISP,SteveClement/MISP,MISP/MISP,FIRSTdotorg/MISP