LightOFF時にカメラのオブジェクトを一度破棄するように修正。

Author: TakayukiHoshi1984

dConnectDevicePlugin/dConnectDeviceHost/app/src/main/java/org/deviceconnect/android/deviceplugin/host/camera/CameraWrapper.java

@@ -848,6 +848,8 @@ public synchronized void turnOffTorch(final @Nullable TorchOffListener listener,
                 throw new IllegalArgumentException(e);
             } catch (CameraWrapperException e) {
                 throw new IllegalArgumentException(e);
+            } finally {
+                close();
             }
             notifyTorchOffEvent(listener, handler);
         }