internal/singleflight.call.err (field)

5 uses

	internal/singleflight (current package)
		singleflight.go#L18: 	err error
		singleflight.go#L56: 		return c.val, c.err, true
		singleflight.go#L64: 	return c.val, c.err, c.dups > 0
		singleflight.go#L93: 	c.val, c.err = fn()
		singleflight.go#L101: 		ch <- Result{c.val, c.err, c.dups > 0}