stat.2: DESCRIPTION: add a list entry for 'st_ino'

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
diff --git a/man2/stat.2 b/man2/stat.2
index dce5951..a52c612 100644
--- a/man2/stat.2
+++ b/man2/stat.2
@@ -215,6 +215,9 @@
 .I st_ino
 This field contains the file's inode number.
 .TP
+.I st_mode
+See the discussion of file type and mode, below.
+.TP
 .I st_rdev
 This field describes the device that this file (inode) represents.
 .TP