Fix #4440 Make Call not crash on missing duration field
Fix #4440 Make Call not crash on missing duration field

pgorod/SuiteCRM,gcoop-libre/SuiteCRM,lionixevolve/LionixCRM,noelhunter/SuiteCRM,salesagility/SuiteCRM,samus-aran/SuiteCRM,cumanacr/SuiteCRM,cumanacr/SuiteCRM,daniel-samson/SuiteCRM,JanSiero/SuiteCRM,noelhunter/SuiteCRM,horus68/SuiteCRM-Horus68,willrennie/SuiteCRM,salesagility/SuiteCRM,horus68/SuiteCRM,salesagility-davidthomson/SuiteCRM,Dillon-Brown/SuiteCRM,samus-aran/SuiteCRM,JanSiero/SuiteCRM,JimMackin/SuiteCRM,dfstrauss/SuiteCRM,ChangezKhan/SuiteCRM,gody01/SuiteCRM,horus68/SuiteCRM,ChangezKhan/SuiteCRM,JimMackin/SuiteCRM,salesagility-davidthomson/SuiteCRM,willrennie/SuiteCRM,dfstrauss/SuiteCRM,lionixevolve/LionixCRM,MikeyJC/SuiteCRM,MikeyJC/SuiteCRM,gody01/SuiteCRM,JanSiero/SuiteCRM,MikeyJC/SuiteCRM,lionixevolve/LionixCRM,horus68/SuiteCRM-Horus68,lionixevolve/LionixCRM,willrennie/SuiteCRM,pgorod/SuiteCRM,lionixevolve/LionixCRM,JimMackin/SuiteCRM,salesagility-davidthomson/SuiteCRM,lionixevolve/SuiteCRM,pribeiro42/SuiteCRM,gody01/SuiteCRM,gcoop-libre/SuiteCRM,ChangezKhan/SuiteCRM,lionixevolve/SuiteCRM,horus68/SuiteCRM,Dillon-Brown/SuiteCRM,JimMackin/SuiteCRM,dfstrauss/SuiteCRM,pgorod/SuiteCRM,cumanacr/SuiteCRM,JanSiero/SuiteCRM,Dillon-Brown/SuiteCRM,pribeiro42/SuiteCRM,lionixevolve/LionixCRM,noelhunter/SuiteCRM,samus-aran/SuiteCRM,daniel-samson/SuiteCRM,dfstrauss/SuiteCRM,gody01/SuiteCRM,ChangezKhan/SuiteCRM,MikeyJC/SuiteCRM,samus-aran/SuiteCRM,daniel-samson/SuiteCRM,cumanacr/SuiteCRM,salesagility-davidthomson/SuiteCRM,lionixevolve/SuiteCRM,pgorod/SuiteCRM,gcoop-libre/SuiteCRM,pribeiro42/SuiteCRM,Dillon-Brown/SuiteCRM,lionixevolve/SuiteCRM,pribeiro42/SuiteCRM,willrennie/SuiteCRM,horus68/SuiteCRM-Horus68,noelhunter/SuiteCRM,horus68/SuiteCRM-Horus68,salesagility/SuiteCRM,gcoop-libre/SuiteCRM,salesagility/SuiteCRM,daniel-samson/SuiteCRM