vmtool: do not panic when url is not given
vmtool: do not panic when url is not given

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