Fix the leak of a string
Fix the leak of a string

litl/android-leveldb,michalliu/android-leveldb,litl/android-leveldb,michalliu/android-leveldb,michalliu/android-leveldb,michalliu/android-leveldb,litl/android-leveldb,michalliu/android-leveldb,litl/android-leveldb,michalliu/android-leveldb,litl/android-leveldb