leveldb core dump

Original [issue 226](https://code.google.com/p/leveldb/issues/detail?id=226) created by jovechow on 2014-03-01T15:26:08.000Z:

```
# 0 leveldb::ReadBlock (file=0x8ba6420, options=@0x783124c0, handle=@0x78311fd0, result=0x78311f90) at table/format.cc:101
# 1 0x0000000000b9f179 in leveldb::Table::BlockReader (arg=0x7f3b158a6c18, options=@0x783124c0, index_value=Variable "index_value" is not available.
)
at ./include/leveldb/status.h:95
# 2 0x0000000000b9f4e6 in leveldb::Table::InternalGet (this=0x7f3b158a6c18, options=@0x783124c0, k=@0x783122a0,
arg=0x783121b0, saver=0xba4940 ) at table/table.cc:232
# 3 0x0000000000b9e76f in leveldb::TableCache::Get (this=0x8cf3640, options=@0x783124c0, file_number=Variable "file_number" is not available.
)
at ./include/leveldb/status.h:95
# 4 0x0000000000baa4fd in leveldb::Version::Get (this=0x8c1d480, options=@0x783124c0, k=Variable "k" is not available.
) at ./include/leveldb/status.h:95
# 5 0x0000000000b8b151 in leveldb::DBImpl::Get (this=0x8cf5dc0, options=@0x783124c0, key=@0x783125f0, value=0x78312610)
at ./include/leveldb/status.h:95
```