bug #32908 [Mailer] Add debug info on HTTP transport exceptions (fabpot)

This PR was merged into the 4.4 branch.

Discussion
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[Mailer] Add debug info on HTTP transport exceptions

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

Same as #32896 but for HTTP transports.

Commits
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4cfb4b9 [Mailer] added debug info on HTTP transport exceptions

src/Symfony/Component/Mailer/Transport/AbstractHttpTransport.php

@@ -47,14 +47,11 @@ protected function doSend(SentMessage $message): void
         $response = null;
         try {
             $response = $this->doSendHttp($message);
+            $message->appendDebug($response->getInfo('debug'));
         } catch (HttpTransportException $e) {
-            $response = $e->getResponse();
+            $e->appendDebug($e->getResponse()->getInfo('debug'));
 
             throw $e;
-        } finally {
-            if (null !== $response) {
-                $message->appendDebug($response->getInfo('debug'));
-            }
         }
     }
 }