gello: cleanup resources

fix npe on tablets too

Change-Id: I1ea17887672813b2de72a05f63c6c4f695605459
Signed-off-by: jrizzoli <joey@cyanogenmoditalia.it>
diff --git a/res/drawable/navtab_close_background.xml b/res/drawable/navtab_close_background.xml
index e20cc5c..70883c4 100644
--- a/res/drawable/navtab_close_background.xml
+++ b/res/drawable/navtab_close_background.xml
@@ -15,8 +15,7 @@
 -->
 
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:state_focused="true" android:state_pressed="false" android:drawable="@drawable/bookmarks_widget_thumb_selector_focused" />
-    <item android:state_pressed="true" android:drawable="@drawable/bookmark_thumb_selector_transition" />
+    <item android:state_focused="true" android:state_pressed="false" android:drawable="@color/navtab_bg" />
+    <item android:state_pressed="true" android:drawable="@color/navtab_bg" />
     <item android:drawable="@color/navtab_bg" />
 </selector>
-