+backslashes for built-in functions

Author: codemasher

src/Psr15/PriorityQueueRequestHandler.php

@@ -62,7 +62,7 @@ public function add(MiddlewareInterface $middleware):QueueRequestHandler{
 	 * @return void
 	 */
 	protected function sortMiddleware():void{
-		usort($this->middlewareStack, function(PriorityMiddlewareInterface $a, PriorityMiddlewareInterface $b){
+		\usort($this->middlewareStack, function(PriorityMiddlewareInterface $a, PriorityMiddlewareInterface $b){
 			return $a->getPriority() > $b->getPriority();
 		});
 	}

src/Psr15/QueueRunner.php

@@ -49,7 +49,7 @@ public function handle(ServerRequestInterface $request):ResponseInterface{
 			return $this->fallbackHandler->handle($request);
 		}
 
-		$middleware = array_shift($this->middlewareStack);
+		$middleware = \array_shift($this->middlewareStack);
 
 		return $middleware->process($request, $this);
 	}