Merge branch 'hotfix/download_domain_fix' of wmtx/platform into release

优化

Application/Base/Service/ApplyService.class.php

@@ -96,6 +96,9 @@ class ApplyService {
     public function getDownloadDomain()
     {
         if (C('APP_ENV') == 'prod') {
+            if (empty(C('DOMAIN_DOWNLOAD_PROD'))) {
+                return C('DOMAIN_DOWNLOAD');
+            }
             return C('DOMAIN_DOWNLOAD_PROD');
         } else {
             return C('DOMAIN_DOWNLOAD');