go/payment: check existential of vars before operating
go/payment: check existential of vars before operating

koding/koding,usirin/koding,andrewjcasal/koding,gokmen/koding,kwagdy/koding-1,usirin/koding,drewsetski/koding,koding/koding,andrewjcasal/koding,jack89129/koding,andrewjcasal/koding,sinan/koding,sinan/koding,jack89129/koding,acbodine/koding,jack89129/koding,alex-ionochkin/koding,sinan/koding,jack89129/koding,gokmen/koding,usirin/koding,cihangir/koding,cihangir/koding,kwagdy/koding-1,jack89129/koding,drewsetski/koding,koding/koding,szkl/koding,koding/koding,drewsetski/koding,alex-ionochkin/koding,gokmen/koding,cihangir/koding,jack89129/koding,szkl/koding,gokmen/koding,drewsetski/koding,koding/koding,gokmen/koding,drewsetski/koding,andrewjcasal/koding,usirin/koding,rjeczalik/koding,rjeczalik/koding,jack89129/koding,szkl/koding,andrewjcasal/koding,alex-ionochkin/koding,jack89129/koding,acbodine/koding,rjeczalik/koding,andrewjcasal/koding,kwagdy/koding-1,gokmen/koding,rjeczalik/koding,cihangir/koding,usirin/koding,acbodine/koding,acbodine/koding,mertaytore/koding,szkl/koding,cihangir/koding,alex-ionochkin/koding,acbodine/koding,drewsetski/koding,rjeczalik/koding,rjeczalik/koding,usirin/koding,sinan/koding,mertaytore/koding,alex-ionochkin/koding,sinan/koding,kwagdy/koding-1,drewsetski/koding,mertaytore/koding,mertaytore/koding,cihangir/koding,alex-ionochkin/koding,koding/koding,cihangir/koding,usirin/koding,sinan/koding,andrewjcasal/koding,koding/koding,acbodine/koding,drewsetski/koding,kwagdy/koding-1,cihangir/koding,kwagdy/koding-1,kwagdy/koding-1,szkl/koding,mertaytore/koding,rjeczalik/koding,koding/koding,szkl/koding,rjeczalik/koding,kwagdy/koding-1,mertaytore/koding,alex-ionochkin/koding,acbodine/koding,gokmen/koding,gokmen/koding,mertaytore/koding,szkl/koding,sinan/koding,acbodine/koding,szkl/koding,andrewjcasal/koding,mertaytore/koding,sinan/koding,usirin/koding,alex-ionochkin/koding