When an operation timesout ensure that an NRE is not thrown

2014-10-26 09:59:52,548 [17] DEBUG Couchbase.CouchbaseBucket - Operation for key SimpleKeyREP7126REP7126REP7126REP7126REP7126 failed after 0 retries. Reason: Operation timed out: the timeout can be configured by changing the PoolConfiguration.OperationTimeout property. The default is 2500ms.

...

2014-10-26 09:59:53,842 [11] WARN Couchbase.IO.ConnectionBase - Opcode=Set | Key=SimpleKeyREP7126REP7126REP7126REP7126REP7126 | Host=10.3.121.136:11210
System.NullReferenceException: Object reference not set to an instance of an object.
at Couchbase.IO.Converters.AutoByteConverter.ToByte(Byte[] buffer, Int32 offset) in c:\jenkins\workspace\.net-sdkdclient-ng2_win8_64_andrei\couchbase-net-client\Src\Couchbase\IO\Converters\AutoByteConverter.cs:line 36
at Couchbase.IO.Operations.OperationBase`1.Read(Byte[] buffer, Int32 offset, Int32 length) in c:\jenkins\workspace\.net-sdkdclient-ng2_win8_64_andrei\couchbase-net-client\Src\Couchbase\IO\Operations\OperationBase'.cs:line 105
at Couchbase.IO.Strategies.EapConnection.ReceiveCallback(IAsyncResult asyncResult) in c:\jenkins\workspace\.net-sdkdclient-ng2_win8_64_andrei\couchbase-net-client\Src\Couchbase\IO\Strategies\EapConnection.cs:line 80