fix for #41

AndroidManifest.xml

@@ -76,7 +76,7 @@
         <activity android:name=".ui.activity.ReceiveExternalFilesActivity"
                   android:taskAffinity=""
                   android:excludeFromRecents="true"
-                  android:theme="@style/Theme.ownCloud">
+                  android:theme="@style/Theme.ownCloud.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.SEND" />
 

src/com/owncloud/android/ui/activity/ReceiveExternalFilesActivity.java

@@ -156,7 +156,6 @@ public class ReceiveExternalFilesActivity extends FileActivity
             fm.beginTransaction()
                     .add(taskRetainerFragment, TaskRetainerFragment.FTAG_TASK_RETAINER_FRAGMENT).commit();
         }   // else, Fragment already created and retained across configuration change
-
     }
 
     @Override
@@ -384,7 +383,6 @@ public class ReceiveExternalFilesActivity extends FileActivity
         ActionBar actionBar = getSupportActionBar();
 
         ListView mListView = (ListView) findViewById(android.R.id.list);
-        ActionBar actionBar = getSupportActionBar();
 
         String current_dir = mParents.peek();
         if (current_dir.equals("")) {