fix(ci): avoid non-zero exit from iscc help probe

- stop calling iscc /? in Ensure Inno Setup step

- resolve compiler path via Get-Command/Test-Path and finish with exit 0

.gitea/workflows/release.yml

@@ -41,20 +41,24 @@ jobs:
       - name: Ensure Inno Setup 6
         shell: powershell
         run: |
-          if (Get-Command iscc.exe -ErrorAction SilentlyContinue) {
-            iscc.exe /? | Out-Null
+          $isccPath = ""
+          $inPath = Get-Command iscc.exe -ErrorAction SilentlyContinue
+          if ($inPath) {
+            $isccPath = $inPath.Source
             Write-Host "Inno Setup compiler found in PATH."
           } elseif (Test-Path "C:\Program Files (x86)\Inno Setup 6\ISCC.exe") {
             "C:\Program Files (x86)\Inno Setup 6" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
-            & "C:\Program Files (x86)\Inno Setup 6\ISCC.exe" /? | Out-Null
+            $isccPath = "C:\Program Files (x86)\Inno Setup 6\ISCC.exe"
             Write-Host "Inno Setup compiler found in Program Files (x86)."
           } elseif (Test-Path "C:\Program Files\Inno Setup 6\ISCC.exe") {
             "C:\Program Files\Inno Setup 6" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
-            & "C:\Program Files\Inno Setup 6\ISCC.exe" /? | Out-Null
+            $isccPath = "C:\Program Files\Inno Setup 6\ISCC.exe"
             Write-Host "Inno Setup compiler found in Program Files."
           } else {
             throw "Inno Setup 6 is not installed on runner. Install Inno Setup and restart runner service."
           }
+          Write-Host "Using ISCC: $isccPath"
+          exit 0
 
       - name: Extract app version
         id: extract_version