Allow for null to be passed to doSafeRestart

core/src/main/java/jenkins/model/Jenkins.java

@@ -4667,40 +4667,40 @@
      */
     @Deprecated(since = "2.414")
     public HttpResponse doSafeRestart(StaplerRequest req) throws IOException, ServletException, RestartNotSupportedException {
-        return doSafeRestart(StaplerRequest.toStaplerRequest2(req), null);
+        return doSafeRestart(req != null ? StaplerRequest.toStaplerRequest2(req) : null, null);
     }
 
     /**
      * Queues up a safe restart of Jenkins. Jobs have to finish or pause before it can proceed. No new jobs are accepted.
      *
      * @since 2.475
      */
     public HttpResponse doSafeRestart(StaplerRequest2 req, @QueryParameter("message") String message) throws IOException, ServletException, RestartNotSupportedException {
         checkPermission(MANAGE);
         if (req != null && req.getMethod().equals("GET")) {
             return HttpResponses.forwardToView(this, "_safeRestart.jelly");
         }
 
         if (req != null && req.getParameter("cancel") != null) {
             return doCancelQuietDown();
         }
 
         if (req == null || req.getMethod().equals("POST")) {
             safeRestart(message);
         }
 
         return HttpResponses.redirectToDot();
     }
 
     /**
      * @deprecated use {@link #doSafeRestart(StaplerRequest2, String)}
      * @since 2.414
      */
     @Deprecated
     @StaplerNotDispatchable
     public HttpResponse doSafeRestart(StaplerRequest req, @QueryParameter("message") String message) throws IOException, javax.servlet.ServletException, RestartNotSupportedException {
         try {
-            return doSafeRestart(StaplerRequest.toStaplerRequest2(req), message);
+            return doSafeRestart(req != null ? StaplerRequest.toStaplerRequest2(req) : null, message);
         } catch (ServletException e) {
             throw ServletExceptionWrapper.fromJakartaServletException(e);
         }