From f8ef28f9a6e536cdfff0dd3a3b31eab1d8543494 Mon Sep 17 00:00:00 2001
From: Paul Holden <paulh@moodle.com>
Date: Tue, 15 Nov 2022 20:11:31 +0000
Subject: [PATCH] MDL-76284 webservice: early exit if no users for missing
 capabilities.

---
 webservice/lib.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/webservice/lib.php b/webservice/lib.php
index 8ed26c54409..0107f8d1c13 100644
--- a/webservice/lib.php
+++ b/webservice/lib.php
@@ -684,7 +684,8 @@ class webservice {
             }
         }
 
-        if (empty($servicecaps)) {
+        // Bail out early if there's nothing to process.
+        if (empty($users) || empty($servicecaps)) {
             return [];
         }