[UPF] cosmetic: Fix trailing whitespace (#1473)

src/upf/pfcp-path.c

@@ -135,7 +135,7 @@ int upf_pfcp_open(void)
     ogs_list_for_each(&ogs_pfcp_self()->pfcp_list, node) {
         sock = ogs_pfcp_server(node);
         if (!sock) return OGS_ERROR;
-        
+
         node->poll = ogs_pollset_add(ogs_app()->pollset,
                 OGS_POLLIN, sock->fd, pfcp_recv_cb, sock);
         ogs_assert(node->poll);
@@ -288,4 +288,4 @@ int upf_pfcp_send_session_report_request(
     ogs_expect(rv == OGS_OK);
 
     return rv;
-}
+}