explicit break on None and dont run speech if nothing in hotwords

whisper-2023/hotwords.py

@@ -108,7 +108,7 @@ class Parser(threading.Thread):
       while True:
          try:
             clip = self.inq.get()
-            if not clip:
+            if clip is None:
                break
             self.outq.put(self._run(clip).strip())
          except Exception as e:
@@ -222,7 +222,6 @@ class Reactor(threading.Thread):
       if environ.get("DEBUG", None):
          log(f"seeking {hotwords} in {text}")
       if not hotwords:
-         self.outq.put(("", text))
          return
       cleantext = "".join([i for i in "".join(text.lower().split()) if i.isalpha()])
       for i in hotwords: