修复availableProcessors，潜在的native方法获取CPU个数失败的问题

hutool-socket/src/test/java/cn/hutool/socket/aio/AioClientTest.java

@@ -2,6 +2,7 @@ package cn.hutool.socket.aio;
 
 import cn.hutool.core.lang.Console;
 import cn.hutool.core.thread.ThreadFactoryBuilder;
+import cn.hutool.core.util.RuntimeUtil;
 import cn.hutool.core.util.StrUtil;
 
 import java.io.IOException;
@@ -12,7 +13,7 @@ import java.nio.channels.AsynchronousChannelGroup;
 public class AioClientTest {
 	public static void main(String[] args) throws IOException {
 		final AsynchronousChannelGroup GROUP = AsynchronousChannelGroup.withFixedThreadPool(//
-				Runtime.getRuntime().availableProcessors(), // 默认线程池大小
+				RuntimeUtil.getProcessorCount(), // 默认线程池大小
 				ThreadFactoryBuilder.create().setNamePrefix("Huool-socket-").build()//
 		);