Bump go-fleecedelta revision for null delta fix (#4550)
Bump go-fleecedelta revision for null delta fix (#4550)


couchbaselabs/sync_gateway,ceejatec/sync_gateway,couchbaselabs/sync_gateway,couchbaselabs/sync_gateway,ceejatec/sync_gateway,ceejatec/sync_gateway,ceejatec/sync_gateway,couchbaselabs/sync_gateway