Fix duplicate assignment of pmsg->brs

Author: Pandafeng-HHU

bsp/stm32/libraries/HAL_Drivers/drivers/drv_fdcan.c

@@ -501,7 +501,7 @@ static int _inline_can_recvmsg(struct rt_can_device *can, void *buf, rt_uint32_t
 
         #ifdef RT_CAN_USING_CANFD
         pmsg->fd_frame =  (pdrv_can->RxHeader.FDFormat >> 16) && 0x20;
-        pmsg->brs = (pdrv_can->RxHeader.BitRateSwitch >> 16) && 0x10;;
+        pmsg->brs = (pdrv_can->RxHeader.BitRateSwitch >> 16) && 0x10;
         #endif
 
         return sizeof(struct rt_can_msg);
@@ -713,4 +713,4 @@ static int rt_hw_can_init(void)
 INIT_BOARD_EXPORT(rt_hw_can_init);
 
 #endif /* BSP_USING_FDCAN1 || BSP_USING_FDCAN2 */
-#endif /* RT_USING_CAN */
+#endif /* RT_USING_CAN */