gofmt the cap's test (issue 1806)

go/buildcpu/buildcpu_test.go

@@ -78,7 +78,9 @@ func TestReadInForce(t *testing.T) {
 	// A command with a space and a parenthesis in it, then nice 19 in field 19.
 	_ = os.WriteFile(stat, []byte("42 (mesh (build) go) S 1 42 42 0 -1 4194560 1 0 0 0 0 0 0 0 39 19 8 0 1 2 3\n"), 0o644)
 	cgroupRoot, procSelfCgroup, procSelfStat = cg, self, stat
-	t.Cleanup(func() { cgroupRoot, procSelfCgroup, procSelfStat = "/sys/fs/cgroup", "/proc/self/cgroup", "/proc/self/stat" })
+	t.Cleanup(func() {
+		cgroupRoot, procSelfCgroup, procSelfStat = "/sys/fs/cgroup", "/proc/self/cgroup", "/proc/self/stat"
+	})
 
 	got := ReadInForce()
 	want := InForce{Nice: 19, Cgroup: "/system.slice/mesh-build-go-runtime.service", CPUIdle: "1", CPUWeight: "0",