swarm/*: remove redundant type specifiers (#19089)

swarm/network/stream/stream.go

@@ -75,7 +75,7 @@ const (
 // subscriptionFunc is used to determine what to do in order to perform subscriptions
 // usually we would start to really subscribe to nodes, but for tests other functionality may be needed
 // (see TestRequestPeerSubscriptions in streamer_test.go)
-var subscriptionFunc func(r *Registry, p *network.Peer, bin uint8, subs map[enode.ID]map[Stream]struct{}) bool = doRequestSubscription
+var subscriptionFunc = doRequestSubscription
 
 // Registry registry for outgoing and incoming streamer constructors
 type Registry struct {

swarm/pss/pss.go

@@ -676,7 +676,7 @@ func (p *Pss) send(to []byte, topic Topic, msg []byte, asymmetric bool, key []by
 
 // sendFunc is a helper function that tries to send a message and returns true on success.
 // It is set here for usage in production, and optionally overridden in tests.
-var sendFunc func(p *Pss, sp *network.Peer, msg *PssMsg) bool = sendMsg
+var sendFunc = sendMsg
 
 // tries to send a message, returns true if successful
 func sendMsg(p *Pss, sp *network.Peer, msg *PssMsg) bool {

swarm/storage/ldbstore_test.go

@@ -189,9 +189,9 @@ func TestMockDbStoreNotFound(t *testing.T) {
 }
 
 func testIterator(t *testing.T, mock bool) {
-	var chunkcount int = 32
 	var i int
 	var poc uint
+	chunkcount := 32
 	chunkkeys := NewAddressCollection(chunkcount)
 	chunkkeysResults := NewAddressCollection(chunkcount)