math/big: fix Errorf verb

Pointed out by go vet.

R=r
CC=golang-dev
https://golang.org/cl/10368048

diff --git a/src/pkg/math/big/nat_test.go b/src/pkg/math/big/nat_test.go
index 2dd7bf63968976f0c87f16fb2c6092bcf8e8ff67..1d4dfe80d3d66479d0f013ed6015b4d1fff63b32 100644 (file)
--- a/src/pkg/math/big/nat_test.go
+++ b/src/pkg/math/big/nat_test.go
@@ -685,7 +685,7 @@ func runModWTests(t *testing.T, tests []modWTest) {
 
                r := in.abs.modW(d.abs[0])
                if r != out.abs[0] {
-                       t.Errorf("#%d failed: got %s want %s", i, r, out)
+                       t.Errorf("#%d failed: got %d want %s", i, r, out)
                }
        }
 }