libfsdriver: preinitialize stat.st_ino

The stat.st_ino field must always be filled with the inode number
given as part of the fdr_stat request anyway, so libfsdriver can
simply fill in the number and allow the file system not to bother.

Change-Id: Ia7a849d0b23dfc83010df0d48fa26e4225427694

lib/libpuffs/stadir.c

@@ -45,7 +45,6 @@ int fs_stat(ino_t ino_nr, struct stat *statbuf)
   /* true iff special */
   s = (mo == I_CHAR_SPECIAL || mo == I_BLOCK_SPECIAL);
 
-  statbuf->st_ino = va.va_fileid;
   statbuf->st_mode = va.va_mode;
   statbuf->st_nlink = va.va_nlink;
   statbuf->st_uid = va.va_uid;