filetree: prevent calling `stopWatching` method of `Finder` if it doesn't exist
filetree: prevent calling `stopWatching` method of `Finder` if it doesn't exist

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