simpler

crypto/rand/uniform.go

@@ -221,6 +221,6 @@ func (p *PRNG) Shuffle(n int, swap func(i, j int)) {
 	// Nevertheless, the right API signature accepts an int n, so handle it as best we can.
 	for i := n - 1; i > 0; i-- {
 		j := int(p.Uint64n(uint64(i + 1)))
-		swap(int(i), int(j))
+		swap(i, j)
 	}
 }