Null reference exception when bound property is null

[BernieWhite]

Description of the issue

When a pipeline object property is exists but is set to null and is bound to TargetName/ TargetType a Null Reference Exception occurs.

To Reproduce

Steps to reproduce the issue:

$a = [PSCustomObject]@{ name = 'test'; kind = $null }
$a | invoke-psrule -Option @{ 'binding.targettype' = 'kind' } 

Expected behaviour

Implement null value checking for the property value.

Error output

Capture any error messages and or verbose messages with -Verbose.

Object reference not set to an instance of an object.
At C:\removed\PSRule\PSRule.psm1:182 char:17
+                 $pipeline.Process($InputObject);
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : OperationStopped: (:) [], NullReferenceException
+ FullyQualifiedErrorId : System.NullReferenceException

Module in use and version:

• Module: PSRule
• Version: 0.11.0-B1910014

Captured output from $PSVersionTable:

Name                           Value
----                           -----
PSVersion                      6.2.3
PSEdition                      Core
GitCommitId                    6.2.3
OS                             Microsoft Windows 10.0.18363
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0