[12.x] Use null coalescing for memoryExceededExitCode (laravel#57090)

* Update Worker.php

* Update Worker.php

* Update Worker.php

* use 0

Author: jackbayliss

src/Illuminate/Queue/Worker.php

@@ -314,7 +314,7 @@ protected function stopIfNecessary(WorkerOptions $options, $lastRestart, $startT
     {
         return match (true) {
             $this->shouldQuit => static::EXIT_SUCCESS,
-            $this->memoryExceeded($options->memory) => static::$memoryExceededExitCode ?: static::EXIT_MEMORY_LIMIT,
+            $this->memoryExceeded($options->memory) => static::$memoryExceededExitCode ?? static::EXIT_MEMORY_LIMIT,
             $this->queueShouldRestart($lastRestart) => static::EXIT_SUCCESS,
             $options->stopWhenEmpty && is_null($job) => static::EXIT_SUCCESS,
             $options->maxTime && hrtime(true) / 1e9 - $startTime >= $options->maxTime => static::EXIT_SUCCESS,

tests/Integration/Queue/WorkCommandTest.php

@@ -167,14 +167,14 @@ public function testMemoryExitCode()
     {
         $this->markTestSkippedWhenUsingQueueDrivers(['redis', 'beanstalkd']);
 
-        Worker::$memoryExceededExitCode = 25;
+        Worker::$memoryExceededExitCode = 0;
 
         Queue::push(new FirstJob);
         Queue::push(new SecondJob);
 
         $this->artisan('queue:work', [
             '--memory' => 0.1,
-        ])->assertExitCode(25);
+        ])->assertExitCode(0);
 
         // Memory limit isn't checked until after the first job is attempted.
         $this->assertSame(1, Queue::size());