Forgot import ListView

Author: jfeinstein10

library/src/com/slidingmenu/lib/app/SlidingActivityHelper.java

@@ -7,6 +7,7 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewGroup.LayoutParams;
+import android.widget.ListView;
 import android.widget.RelativeLayout;
 
 import com.slidingmenu.lib.R;