fix(vm_image_util): If DIGESTS wasn't generated don't copy it.
fix(vm_image_util): If DIGESTS wasn't generated don't copy it.

Failed to test my last change with uploads disabled :(

Also, it needs to be return 0, not return.

glevand/coreos--scripts,mischief/scripts,gtank/scripts,gtank/scripts,smilart/scripts,vmware/coreos-scripts,trnubo/scripts,zhang0137/scripts,nicescale/scripts,crawford/scripts,endocode/scripts,crawford/scripts,bcwaldon/coreos-scripts,glevand/coreos--scripts,fivethreeo/scripts,trnubo/scripts,bcwaldon/coreos-scripts,mischief/scripts,BugRoger/scripts,mjg59/scripts,andrejro/coreos--scripts,endocode/scripts,sigma/coreos-scripts,zhang0137/scripts,zhang0137/scripts,mjg59/scripts,nicescale/scripts,BugRoger/scripts,bcwaldon/coreos-scripts,smilart/scripts,fivethreeo/scripts,vmware/coreos-scripts,andrejro/coreos--scripts,vmware/coreos-scripts,marineam/coreos-scripts,sigma/coreos-scripts,nicescale/scripts,gtank/scripts,sigma/coreos-scripts,smilart/scripts,endocode/scripts,fivethreeo/scripts,crawford/scripts,coreos/scripts,mjg59/scripts,trnubo/scripts,marineam/coreos-scripts,BugRoger/scripts,coreos/scripts,marineam/coreos-scripts,mischief/scripts,andrejro/coreos--scripts