fix access

src/com/owncloud/android/utils/RecursiveFileObserver.java

@@ -20,13 +20,13 @@
 
 package com.owncloud.android.utils;
 
+import android.os.FileObserver;
+
 import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Stack;
 
-import android.os.FileObserver;
-
 public class RecursiveFileObserver extends FileObserver {
 
     private final List<SingleFileObserver> mObservers =  new ArrayList<>();
@@ -38,7 +38,7 @@ public class RecursiveFileObserver extends FileObserver {
         this(path, ALL_EVENTS);
     }
     
-    RecursiveFileObserver(String path, int mask) {
+    public RecursiveFileObserver(String path, int mask) {
         super(path, mask);
         mPath = path;
         mMask = mask;