优化代码

java110-core/src/main/java/com/java110/core/log/LoggerFactory.java

@@ -355,6 +355,6 @@ public class LoggerFactory implements Logger {
 
     @Override
     public boolean isWarnEnabled() {
-        return this.isWarnEnabled();
+        return this.logger.isWarnEnabled();
     }
 }