fix spotbugs

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

Author: tobiasKaminsky

app/src/main/java/com/owncloud/android/ui/activity/DrawerActivity.java

@@ -177,6 +177,7 @@ public abstract class DrawerActivity extends ToolbarActivity
     /**
      * Id of the checked menu item.
      */
+    @SuppressFBWarnings({"PA", "MS"})
     public static int menuItemId = Menu.NONE;
 
     private static int previousMenuItemId = Menu.NONE;