[Xen-changelog] Don't fail readDB on empty dirs.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User cl349@xxxxxxxxxxxxxxxxxxxx
# Node ID 3eea03342466e50e983ecb49436650b89c8509e5
# Parent  a0399927e1a1884951f79efd458e87300a32015c
Don't fail readDB on empty dirs.
Signed-off-by: Christian Limpach <Christian.Limpach@xxxxxxxxxxxx>

diff -r a0399927e1a1 -r 3eea03342466 tools/python/xen/xend/xenstore/xsobj.py
--- a/tools/python/xen/xend/xenstore/xsobj.py   Tue Sep 13 20:54:41 2005
+++ b/tools/python/xen/xend/xenstore/xsobj.py   Tue Sep 13 21:00:13 2005
@@ -485,9 +485,11 @@
         if self.__db__ is None:
             return
         self.__data__ = self.__db__.getData()
-        for k in self.__db__.ls():
-            n = self.addChild(k)
-            n.readDB()
+        l = self.__db__.ls()
+        if l:
+            for k in l:
+                n = self.addChild(k)
+                n.readDB()
         self.__dirty__ = False
 
     def readChildDB(self, k):

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