Add memcache stub change from the 1.7.5 SDK
@@ -282,7 +282,7 @@ class MemcacheServiceStub(apiproxy_stub.APIProxyStub):
"""
key = request.key()
entry = self._GetKey(namespace, key)
- if entry is None:
+ if entry is None or entry.CheckLocked():
if not request.has_initial_value():
return None
if namespace not in self._the_cache:
