Simplify code by setting defaults to zero if they are missing.
Simplify code by setting defaults to zero if they are missing.

jashot7/openbazaar-desktop,jjeffryes/openbazaar-desktop,srhoulam/openbazaar-desktop,jjeffryes/openbazaar-desktop,srhoulam/openbazaar-desktop,OpenBazaar/openbazaar-desktop,srhoulam/openbazaar-desktop,OpenBazaar/openbazaar-desktop,jjeffryes/openbazaar-desktop,jashot7/openbazaar-desktop,jashot7/openbazaar-desktop,OpenBazaar/openbazaar-desktop