n-api: add missed nullptr check in napi_has_own_property

PR-URL: #30626
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

Author: lundibundi

src/js_native_api_v8.cc

@@ -983,6 +983,7 @@ napi_status napi_has_own_property(napi_env env,
                                   bool* result) {
   NAPI_PREAMBLE(env);
   CHECK_ARG(env, key);
+  CHECK_ARG(env, result);
 
   v8::Local<v8::Context> context = env->context();
   v8::Local<v8::Object> obj;