Remove unneeded code, document creates param and ensure creates only affects state=present

library/windows/win_msi

@@ -27,7 +27,8 @@ module: win_msi
 version_added: "1.7"
 short_description: Installs and uninstalls Windows MSI files
 description:
-    - Installs or uninstalls a Windows MSI file that is already located on the target server
+    - Installs or uninstalls a Windows MSI file that is already located on the
+      target server
 options:
     path:
         description:
@@ -40,6 +41,10 @@ options:
             - present
             - absent
         default: present
+    creates:
+        description:
+            - Path to a file created by installing the MSI to prevent from
+              attempting to reinstall the package on every run
 author: Matt Martz
 '''
 

library/windows/win_msi.ps1

@@ -35,7 +35,7 @@ If ($params.extra_args.GetType)
     $extra_args = $params.extra_args;
 }
 
-If ($params.creates.GetType)
+If ($params.creates.GetType -and $params.state.GetType -and $params.state -ne "absent")
 {
     If (Test-File $creates)
     {
@@ -44,8 +44,6 @@ If ($params.creates.GetType)
 }
 
 $logfile = [IO.Path]::GetTempFileName();
-$stdoutfile = [IO.Path]::GetTempFileName();
-$stderrfile = [IO.Path]::GetTempFileName();
 if ($params.state.GetType -and $params.state -eq "absent")
 {
     msiexec.exe /x $params.path /qb /l $logfile $extra_args;
@@ -59,13 +57,7 @@ Set-Attr $result "changed" $true;
 
 $logcontents = Get-Content $logfile;
 Remove-Item $logfile;
-$stdoutcontents = Get-Content $stdoutfile;
-Remove-Item $stdoutfile;
-$stderrcontents = Get-Content $stderrfile;
-Remove-Item $stderrfile;
 
 Set-Attr $result "log" $logcontents;
-Set-Attr $result "stdout" $stdoutcontents;
-Set-Attr $result "stderr" $stderrcontents;
 
 Exit-Json $result;