switch ->put_link() from dentry to inode

only one instance looks at that argument at all; that sole
exception wants inode rather than dentry.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index eb35874..afe232b 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -402,7 +402,7 @@
 	return pde->data;
 }
 
-static void proc_put_link(struct dentry *dentry, void *p)
+static void proc_put_link(struct inode *unused, void *p)
 {
 	unuse_pde(p);
 }