test: don't assign address of array to slice.

R=rsc
CC=golang-dev
https://golang.org/cl/2084042
diff --git a/test/fixedbugs/bug146.go b/test/fixedbugs/bug146.go
index bfb7529..16324c7 100644
--- a/test/fixedbugs/bug146.go
+++ b/test/fixedbugs/bug146.go
@@ -9,7 +9,7 @@
 func main() {
 	type Slice []byte;
 	a := [...]byte{ 0 };
-	b := Slice(&a);		// This should be OK.
+	b := Slice(a[0:]);	// This should be OK.
 	c := Slice(a);		// ERROR "invalid|illegal|cannot"
 	_, _ = b, c;
 }