[DFS][romfs] code cleanup

components/dfs/filesystems/romfs/dfs_romfs.h

@@ -18,7 +18,7 @@
 
 struct romfs_dirent
 {
-    rt_uint32_t	     type;  /* dirent type */
+    rt_uint32_t      type;  /* dirent type */
 
     const char       *name; /* dirent name */
     const rt_uint8_t *data; /* file date ptr */