Unregistering handler on the receiver causes errors

[serkantkaraca]

Actual Behavior

<628.5> 03/01/2017 13:52:19 - Info: NetCore-Receiver_0: <1> Unregistering pumps...
<628.5> 03/01/2017 13:52:19 - Error: NetCore-Receiver_0: <1> Exception caught (Identifier: Receive from partition 0): System.OperationCanceledException: New handler has registered for this receiver.
<628.5> 03/01/2017 13:52:19 - Error: NetCore-Receiver_0: <1> Exception caught (Identifier: Receive from partition 1): System.OperationCanceledException: New handler has registered for this receiver.
<628.5> 03/01/2017 13:52:19 - Error: NetCore-Receiver_0: <1> Exception caught (Identifier: Receive from partition ): System.OperationCanceledException: New handler has registered for this receiver.
<628.5> 03/01/2017 13:52:19 - Error: NetCore-Receiver_0: <1> Exception caught (Identifier: Receive from partition 3): System.OperationCanceledException: New handler has registered for this receiver.

Expected Behavior

Should not throw or cause an error though error handler.

Versions

• OS platform and version: All
• .NET Version: All
• NuGet package version or commit ID: All

[serkantkaraca]

Fix merged to dev branch.