update System/os_handler.c.

Signed-off-by: 零中断延迟的RTOS <cosyos@139.com>

System/os_handler.c

@@ -3,8 +3,8 @@
  * @file     os_handler.c
  * @brief    OS_SysTick_Handler and sPendSV_Handler
  * @author   迟凯峰
- * @version  V3.0.1
- * @date     2024.10.16
+ * @version  V3.0.2
+ * @date     2024.10.19
  ******************************************************************************/
 
 #include "os_link.h"
@@ -290,7 +290,9 @@ m_stacksize_t   _SYS_MEM_ s_taskstacklen;
 s_u8_t sPendSV_Handler(void) MCUCFG_C51USING
 {
 	/* 中断挂起服务FIFO */
+	#if MCUCFG_PENDSVFIFO_DEPTH > 0
 	mPendSV_FIFOHandle;
+	#endif
 	
 	/* 挂起服务钩子 */
 	#if SYSCFG_PENDSVHOOK == __ENABLED__