don't use https url by default, if ssl is not available

feedback.cc

@@ -298,6 +298,12 @@ static int free(void *p)
   return 0;
 }
 
+#ifdef HAVE_OPENSSL
+#define DEFAULT_PROTO "https://"
+#else
+#define DEFAULT_PROTO "http://"
+#endif
+
 static MYSQL_SYSVAR_STR(server_uid, server_uid,
        PLUGIN_VAR_READONLY | PLUGIN_VAR_NOCMDOPT,
        "Automatically calculated server unique id hash.", NULL, NULL, 0);
@@ -307,7 +313,7 @@ static MYSQL_SYSVAR_STR(user_info, user_info,
        NULL, NULL, "");
 static MYSQL_SYSVAR_STR(url, url, PLUGIN_VAR_READONLY | PLUGIN_VAR_RQCMDARG,
        "Space separated URLs to send the feedback report to.", NULL, NULL,
-       "https://mariadb.org/feedback_plugin/post");
+       DEFAULT_PROTO "mariadb.org/feedback_plugin/post");
 static MYSQL_SYSVAR_ULONG(send_timeout, send_timeout, PLUGIN_VAR_RQCMDARG,
        "Timeout (in seconds) for the sending the report.",
        NULL, NULL, 60, 1, 60*60*24, 1);