cmd/addr2line: exclude Go tool test on darwin/arm

Change-Id: Icee6c88b7eed5fb27f046373ecf53bf64b68c696
Reviewed-on: https://go-review.googlesource.com/6191Reviewed-by: Minux Ma <minux@golang.org>

src/cmd/addr2line/addr2line_test.go

@@ -95,6 +95,10 @@ func TestAddr2Line(t *testing.T) {
 	switch runtime.GOOS {
 	case "nacl", "android":
 		t.Skipf("skipping on %s", runtime.GOOS)
+	case "darwin":
+		if runtime.GOARCH == "arm" {
+			t.Skipf("skipping on %s/%s", runtime.GOOS, runtime.GOARCH)
+		}
 	}
 
 	syms := loadSyms(t)