Merge pull request #1337 from CaptainJeff/master

fix: removing event listeners in invalidate

Author: marcosinigaglia

android/src/main/java/it/innove/BleManager.java

@@ -972,6 +972,11 @@ public void removeListeners(double count) {
 
     @Override
     public void invalidate() {
+        try {
+            context.unregisterReceiver(mReceiver);
+        } catch (Exception e) {
+            Log.e(LOG_TAG, "Receiver not registered or already unregistered", e);
+        }
         try {
             // Disconnect all known peripherals, otherwise android system will think we are still connected
             // while we have lost the gatt instance