Exit early if no API changes are found (#40608)

Co-authored-by: Chidozie Ononiwu <[email protected]>

Author: azure-sdk

eng/common/scripts/Helpers/ApiView-Helpers.ps1

@@ -171,8 +171,7 @@ function Set-ApiViewCommentForPR {
     $response = Invoke-WebRequest -Uri $apiviewEndpoint -Method Get -MaximumRetryCount 3
     if ($response.StatusCode -ne 200) {
       LogWarning "API changes are not detected in this pull request."
-      $commentText += ""
-      $commentText += "API changes are not detected in this pull request."
+      exit 0
     }
     else {
       LogSuccess "APIView identified API level changes in this PR and created $($response.Count) API reviews"