Fix for #24

after we have added PropertiesToLoad to $GroupSearcher once, subsequent calls to FindOne() will fail when trying to find the next group. If we still have a $Result, and that $Result contains a property named `member`, the loop will continue using the previous successful search results as though they are the current search results, resulting in reprocessing the previous group.

PowerShell/BloodHound.ps1

@@ -5421,6 +5421,8 @@ function Get-NetGroupMember {
                 }
 
                 $Members = @()
+                $GroupSearcher.PropertiesToLoad.Clear()
+                $Result = $False
                 try {
                     $Result = $GroupSearcher.FindOne()
                 }