[patch]anon_inodes.c: fix error check in anon_inode_getfd

[Yan Zheng]

Hello,

igrab return NULL on error.

Signed-off-by: Yan Zheng<[EMAIL PROTECTED]>
---
diff -ur linux-2.6.23-rc8/fs/anon_inodes.c linux/fs/anon_inodes.c
--- linux-2.6.23-rc8/fs/anon_inodes.c   2007-09-27 10:05:07.000000000 +0800
+++ linux/fs/anon_inodes.c      2007-09-27 10:18:26.000000000 +0800
@@ -87,8 +87,8 @@
                return -ENFILE;

        inode = igrab(anon_inode_inode);
-       if (IS_ERR(inode)) {
-               error = PTR_ERR(inode);
+       if (!inode) {
+               error = -ENOENT;
                goto err_put_filp;
        }
-
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