From 237e30df4ff55ece8a2033d68d78c735ef4ff7c1 Mon Sep 17 00:00:00 2001
From: Nikolay Pultsin <geometer@fbreader.org>
Date: Fri, 7 Aug 2015 03:30:44 +0200
Subject: [PATCH] fixed possible NPE

---
 .../pals/android/lib/ui/filechooser/FileChooserActivity.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/third-party/android-filechooser/code/src/group/pals/android/lib/ui/filechooser/FileChooserActivity.java b/third-party/android-filechooser/code/src/group/pals/android/lib/ui/filechooser/FileChooserActivity.java
index e87c8d340..e5f121460 100755
--- a/third-party/android-filechooser/code/src/group/pals/android/lib/ui/filechooser/FileChooserActivity.java
+++ b/third-party/android-filechooser/code/src/group/pals/android/lib/ui/filechooser/FileChooserActivity.java
@@ -456,6 +456,11 @@ public class FileChooserActivity extends Activity {
     @Override
     public void onBackPressed() {
         IFile currentLoc = getLocation();
+		if (currentLoc == null || myHistory == null) {
+			super.onBackPressed();
+			return;
+		}
+
         IFile preLoc = null;
         while (currentLoc.equalsToPath(preLoc = mHistory.prevOf(currentLoc)))
             mHistory.remove(preLoc);