Add timeout to consumer queue get

Prevents hanging on config reload

mycroft/client/speech/listener.py

@@ -13,7 +13,7 @@
 # limitations under the License.
 #
 import time
-from Queue import Queue
+from Queue import Queue, Empty
 from threading import Thread
 
 import speech_recognition as sr
@@ -96,9 +96,9 @@ class AudioConsumer(Thread):
             self.read()
 
     def read(self):
-        audio = self.queue.get()
-
-        if audio is None:
+        try:
+            audio = self.queue.get(0.5)
+        except Empty:
             return
 
         if self.state.sleeping: