android: log a warning if listeners could not be attached

android/sdk/src/main/java/org/jitsi/meet/sdk/AudioDeviceHandlerConnectionService.java

         RNConnectionService rcs = ReactInstanceManagerHolder.getNativeModule(RNConnectionService.class);
         if (rcs != null) {
             rcs.setCallAudioStateListener(this);
+        } else {
+            JitsiMeetLogger.w(TAG + " Couldn't set call audio state listener, module is null");
         }
     }
 
         RNConnectionService rcs = ReactInstanceManagerHolder.getNativeModule(RNConnectionService.class);
         if (rcs != null) {
             rcs.setCallAudioStateListener(null);
+        } else {
+            JitsiMeetLogger.w(TAG + " Couldn't set call audio state listener, module is null");
         }
     }