avoid a race condition by an existential check
avoid a race condition by an existential check

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