Windows: check that device is still connected

Author: manuelbl

java-does-usb/src/main/java/net/codecrete/usb/windows/WindowsUsbDevice.java

@@ -97,9 +97,7 @@ public boolean isOpened() {
 
     @Override
     public synchronized void open() {
-        if (isOpened())
-            throwException("device is already open");
-
+        checkIsClosed("device is already open");
         showAsOpen = true;
     }
 

java-does-usb/src/test/java/net/codecrete/usb/special/Unplug.java

@@ -66,7 +66,7 @@ private static void onUnpluggedDevice(UsbDevice device) {
                 System.err.println("Device should not be openable after disconnect");
             } catch (UsbException e) {
                 if (!e.getMessage().contains("disconnected"))
-                    System.err.println(STR."Unexpected error: \{e.getMessage()}");
+                    System.err.println("Unexpected error: " + e.getMessage());
             }
         }).start();
     }