Fix all golangci-lint warnings surfaced by v2.4.0 (#4567)

* Initial plan

* Fix all golangci-lint warnings (21 issues resolved)

Co-authored-by: gabek <414923+gabek@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: gabek <414923+gabek@users.noreply.github.com>

core/rtmp/rtmp.go

@@ -114,11 +114,7 @@ func HandleConn(c *rtmp.Conn, nc net.Conn) {
 
 	w := flv.NewMuxer(rtmpIn)
 
-	for {
-		if !_hasInboundRTMPConnection {
-			break
-		}
-
+	for _hasInboundRTMPConnection {
 		// If we don't get a readable packet in 10 seconds give up and disconnect
 		if err := _rtmpConnection.SetReadDeadline(time.Now().Add(10 * time.Second)); err != nil {
 			log.Debugln(err)