fix: 修复了LOSCFG_FS_FAT_VIRTUAL_PARTITION宏开关错误作用域引起的功能错误

在init_cluster函数中，若未打开LOSCFG_FS_FAT_VIRTUAL_PARTITION会导致循环初始化
簇时，未调用sync_window函数，进而导致创建的文件夹未能正确置零。

Close #I3W1IW
Signed-off-by: NFar <yesiyuan2@huawei.com>

fs/fat/os_adapt/fatfs.c

@@ -294,12 +294,12 @@ static FRESULT init_cluster(DIR *dp_new, FATFS *fs, int type, const char *target
 #else
         PARENTFS(fs)->winsect = sect++;
         PARENTFS(fs)->wflag = 1;
+#endif
         result = sync_window(fs);
         if (result != FR_OK) {
             remove_chain(&(dp_new->obj), *clust, 0);
             return result;
         }
-#endif
         if (type == AM_LNK) {
             /* No need to clean the rest sectors of the cluster for symlink */
             break;