move check values to left side of comparison

Get-InstalledSoftware.ps1

@@ -22,7 +22,7 @@ Function Test-ItemProperty {
     param([Parameter(Mandatory=$true)][string]$Path,[Parameter(Mandatory=$true)][string]$Name)
     Try {
         $test = Get-ItemProperty -Path $Path -Name $Name -ErrorAction SilentlyContinue 
-        If (($test -eq $null) -or ($test.Length -eq 0)) { Return $false } Else { Return $true }
+        If (($null -eq $test) -or ($test.Length -eq 0)) { Return $false } Else { Return $true }
     }
     Catch { Return $false }
 }
@@ -59,7 +59,7 @@ Function Get-ItemPropertyInfo {
 
                 ## Make sure $formatstring has a value, if not just try to cast directly to a datetime
                 Try {
-                If ( $formatstring -eq $null ) {
+                If ( $null -eq $formatstring ) {
                     $date = [datetime]$retval
                 } Else {
                     $date = [datetime]::ParseExact($retval,$formatstring,$null)