Guard legacy Curl socket conversion

Only convert CURLINFO_LASTSOCKET output after curl_easy_getinfo succeeds, matching the modern socket path and avoiding use of an invalid result.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: aefd8d4a-8755-4853-8e6b-267cce60e3a9

Author: bmehta001

lib/http/HttpClient_Curl.hpp

@@ -279,7 +279,10 @@ class CurlHttpOperation {
 #else
         long lastSocket = -1;
         res = curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &lastSocket);
-        sockextr = static_cast<curl_socket_t>(lastSocket);
+        if (res == CURLE_OK)
+        {
+            sockextr = static_cast<curl_socket_t>(lastSocket);
+        }
 #endif
 
         if(CURLE_OK != res)