Preserve updater exit code in bootstrap

scripts/bootstrap-ocsentinel-ninja.ps1

@@ -62,7 +62,10 @@ exit `$LASTEXITCODE
 "@
 
     & powershell.exe -NoProfile -ExecutionPolicy Bypass -Command $command
-    return $LASTEXITCODE
+    $exitCode = $LASTEXITCODE
+    if ($exitCode -ne 0) {
+        throw "OCSentinel updater exited with code $exitCode"
+    }
 }
 
 Initialize-OCSentinelTls
@@ -104,10 +107,7 @@ function Assert-ArtifactSignature {
 
 if (Test-Path -LiteralPath $updaterPath) {
     Write-Host "Existing OCSentinel installation found. Checking for updates."
-    $updaterExitCode = Invoke-OCSentinelUpdater -UpdaterPath $updaterPath -ManifestUri $ManifestUrl
-    if ($updaterExitCode -ne 0) {
-        throw "OCSentinel updater exited with code $updaterExitCode"
-    }
+    Invoke-OCSentinelUpdater -UpdaterPath $updaterPath -ManifestUri $ManifestUrl
 }
 else {
     Write-Host "Reading OCSentinel release manifest: $ManifestUrl"