[njs] Add missing null checks for promise code.

[noreply at nginx.com]

details:   https://github.com/nginx/njs/commit/04721dd3ecb53e080f3f578f587b069c5bc21dae
branches:  master
commit:    04721dd3ecb53e080f3f578f587b069c5bc21dae
user:      Dmitry Sviridkin <dmisvrl1 at gmail.com>
date:      Thu, 15 May 2025 13:55:13 +0100
description:
Add missing null checks for promise code.


---
 src/njs_promise.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/njs_promise.c b/src/njs_promise.c
index f8951cca..78043af4 100644
--- a/src/njs_promise.c
+++ b/src/njs_promise.c
@@ -457,6 +457,10 @@ njs_promise_trigger_reactions(njs_vm_t *vm, njs_value_t *value,
 
         function = njs_promise_create_function(vm,
                                                sizeof(njs_promise_context_t));
+        if (njs_slow_path(function == NULL)) {
+            return njs_value_arg(&njs_value_null);
+        }
+
         function->u.native = njs_promise_reaction_job;
 
         njs_set_data(&arguments[0], reaction, 0);
@@ -784,6 +788,11 @@ njs_promise_prototype_then(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     }
 
     function = njs_promise_create_function(vm, sizeof(njs_promise_context_t));
+    if (njs_slow_path(function == NULL)) {
+        /* vm error is already set by njs_promise_create_function */
+        return NJS_ERROR;
+    }
+
     function->u.native = njs_promise_constructor;
 
     njs_set_function(&constructor, function);