swarm/storage: make linter happy

swarm/storage/mru/lookup/epoch_test.go

@@ -42,15 +42,15 @@ func TestAfter(t *testing.T) {
 		Level: 4,
 	}
 
-	if b.After(a) != true {
+	if !b.After(a) {
 		t.Fatal("Expected 'after' to be true, got false")
 	}
 
-	if b.After(b) != false {
+	if b.After(b) {
 		t.Fatal("Expected 'after' to be false when both epochs are identical, got true")
 	}
 
-	if b.After(c) != true {
+	if !b.After(c) {
 		t.Fatal("Expected 'after' to be true when both epochs have the same time but the level is lower in the first one, but got false")
 	}
 

swarm/storage/mru/lookup/lookup_test.go

@@ -38,9 +38,7 @@ func write(store Store, epoch lookup.Epoch, value *Data) {
 }
 
 func update(store Store, last lookup.Epoch, now uint64, value *Data) lookup.Epoch {
-	var epoch lookup.Epoch
-
-	epoch = lookup.GetNextEpoch(last, now)
+	epoch := lookup.GetNextEpoch(last, now)
 
 	write(store, epoch, value)
 

swarm/storage/mru/query.go

@@ -36,7 +36,7 @@ type Query struct {
 // useful to parse query strings
 func (q *Query) FromValues(values Values) error {
 	time, _ := strconv.ParseUint(values.Get("time"), 10, 64)
-	q.TimeLimit = uint64(time)
+	q.TimeLimit = time
 
 	level, _ := strconv.ParseUint(values.Get("hint.level"), 10, 32)
 	q.Hint.Level = uint8(level)