enable wastedassign

Finds wasted assignment statements.

Signed-off-by: Kai Xia <kaix+github@fastmail.com>

pkg/channels/discord.go

@@ -233,7 +233,7 @@ func (c *DiscordChannel) handleMessage(s *discordgo.Session, m *discordgo.Messag
 			if localPath != "" {
 				localFiles = append(localFiles, localPath)
 
-				transcribedText := ""
+				var transcribedText string
 				if c.transcriber != nil && c.transcriber.IsAvailable() {
 					ctx, cancel := context.WithTimeout(c.getContext(), transcriptionTimeout)
 					result, err := c.transcriber.Transcribe(ctx, localPath)

pkg/channels/telegram.go

@@ -265,7 +265,7 @@ func (c *TelegramChannel) handleMessage(ctx context.Context, message *telego.Mes
 			localFiles = append(localFiles, voicePath)
 			mediaPaths = append(mediaPaths, voicePath)
 
-			transcribedText := ""
+			var transcribedText string
 			if c.transcriber != nil && c.transcriber.IsAvailable() {
 				transcriberCtx, cancel := context.WithTimeout(ctx, 30*time.Second)
 				defer cancel()