Update GLFW.java

JavaApp/src/main/java/org/lwjgl/glfw/GLFW.java

@@ -1012,7 +1012,7 @@ public class GLFW
     }
     
 	public static void glfwShowWindow(long window) {
-	    System.out.println("GLFW: Showing window " + window + ", x=" + x + ", y=" + y);
+	    System.out.println("GLFW: Showing window " + window + ", x=" + internalGetWindow(window).x + ", y=" + internalGetWindow(window).y);
         nglfwSetShowingWindow(window);
     }
 	public static void glfwWindowHint(int hint, int value) {}