fix vad logic in whisperstt

Signed-off-by: Holger Hees <holger.hees@gmail.com>

Author: HolgerHees

bundles/org.openhab.voice.whisperstt/src/main/java/org/openhab/voice/whisperstt/internal/WhisperSTTService.java

@@ -422,6 +422,7 @@ private void backgroundRecognize(final int nSamplesStep, Locale locale, STTListe
                         // run vad
                         if (nProcessedSamples + nSamplesStep > nSamplesMax - nSamplesStep) {
                             logger.debug("VAD: Skipping, max length reached");
+                            break;
                         } else {
                             VAD.@Nullable VADResult lastVADResult = vad.analyze(stepAudioSamples);
                             if (lastVADResult.isVoice()) {