decoder/opus: simplify indentation in HandleAudio()

src/decoder/plugins/OpusDecoderPlugin.cxx

@@ -250,11 +250,14 @@ MPDOpusDecoder::HandleAudio(const ogg_packet &packet)
 				  packet.bytes,
 				  output_buffer, opus_output_buffer_frames,
 				  0);
+	if (gcc_unlikely(nframes <= 0)) {
 		if (nframes < 0)
 			throw FormatRuntimeError("libopus error: %s",
 						 opus_strerror(nframes));
+		else
+			return;
+	}
 
-	if (nframes > 0) {
 	/* apply the "skip" value */
 	if (skip >= (unsigned)nframes) {
 		skip -= nframes;
@@ -277,7 +280,6 @@ MPDOpusDecoder::HandleAudio(const ogg_packet &packet)
 	if (packet.granulepos > 0)
 		client.SubmitTimestamp(FloatDuration(packet.granulepos - pre_skip)
 				       / opus_sample_rate);
-	}
 }
 
 bool