Avoid curl_easy_cleanup on old curl versions in setup_stratum_curl as well.
diff --git a/util.c b/util.c
index 5497e7a..b3cb9c0 100644
--- a/util.c
+++ b/util.c
@@ -1429,8 +1429,14 @@ static bool setup_stratum_curl(struct pool *pool)
mutex_lock(&pool->stratum_lock);
pool->stratum_active = false;
- if (pool->stratum_curl)
+ if (pool->stratum_curl) {
+#if CURL_HAS_KEEPALIVE
curl_easy_cleanup(pool->stratum_curl);
+#else
+ /* See above in suspend_stratum */
+ CLOSESOCKET(pool->sock);
+#endif
+ }
pool->stratum_curl = curl_easy_init();
if (unlikely(!pool->stratum_curl))
quit(1, "Failed to curl_easy_init in initiate_stratum");