Fixed null pointer exception while loging

AndroidManifest.xml

@@ -18,7 +18,7 @@
  -->
 <manifest package="eu.alefzero.owncloud"
     android:versionCode="1"
-    android:versionName="0.1.125B" xmlns:android="http://schemas.android.com/apk/res/android">
+    android:versionName="0.1.126B" xmlns:android="http://schemas.android.com/apk/res/android">
 
     <uses-permission android:name="android.permission.GET_ACCOUNTS" />
     <uses-permission android:name="android.permission.USE_CREDENTIALS" />

src/eu/alefzero/owncloud/ui/activity/FileDisplayActivity.java

@@ -264,7 +264,7 @@ public class FileDisplayActivity extends SherlockFragmentActivity implements
     
     @Override
     protected void onSaveInstanceState(Bundle outState) {
-        Log.e("ASD", "save " + mCurrentDir.getFileName());
+        Log.e("ASD", "save " + (mCurrentDir != null ? mCurrentDir.getFileName() : "NULL"));
         super.onSaveInstanceState(outState);
         if(mDirectories != null && mDirectories.getCount() != 0){
             mDirs = new String[mDirectories.getCount()-1];