Wrap the return result of a wrapped function.

command_wrapper.py

Index: command_wrapper.py
===================================================================
--- command_wrapper.py	(revision 103515)
+++ command_wrapper.py	(working copy)
@@ -72,13 +72,13 @@
 
 
 def RunWithTimeout(timeout, func, *args, **kwargs):
-  result = None
+  wrapper = { 'result': None }
   def CallFunc():
-    result = func(*args, **kwargs)
+    wrapper['result'] = func(*args, **kwargs)
   th = threading.Thread(target=CallFunc)
   th.start()
   th.join(timeout)
-  return result
+  return wrapper['result']
 
 
 def main(argv):