don't call OnDestroyPlayer when player is already destroyed

Author: topi314

disgolink/client.go

@@ -7,8 +7,9 @@ import (
 	"runtime/debug"
 	"sync"
 
-	"github.com/disgoorg/disgolink/v3/lavalink"
 	"github.com/disgoorg/snowflake/v2"
+
+	"github.com/disgoorg/disgolink/v3/lavalink"
 )
 
 type Client interface {

disgolink/player.go

@@ -153,6 +153,11 @@ func (p *playerImpl) Destroy(ctx context.Context) error {
 		return err
 	}
 
+	// check if this player already got destroyed
+	if player := p.lavalink.ExistingPlayer(p.guildID); player == nil {
+		return nil
+	}
+
 	p.lavalink.ForPlugins(func(plugin Plugin) {
 		if pl, ok := plugin.(PluginEventHandler); ok {
 			pl.OnDestroyPlayer(p)

disgolink/rest_client.go

@@ -10,8 +10,9 @@ import (
 	"net/http"
 	"net/url"
 
-	"github.com/disgoorg/disgolink/v3/lavalink"
 	"github.com/disgoorg/snowflake/v2"
+
+	"github.com/disgoorg/disgolink/v3/lavalink"
 )
 
 type Endpoint string