dynamic_dname(): drop unused dentry argument

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/net/socket.c b/net/socket.c
index 9b27c5e..d183e83 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -355,7 +355,7 @@ static const struct super_operations sockfs_ops = {
  */
 static char *sockfs_dname(struct dentry *dentry, char *buffer, int buflen)
 {
-	return dynamic_dname(dentry, buffer, buflen, "socket:[%lu]",
+	return dynamic_dname(buffer, buflen, "socket:[%lu]",
 				d_inode(dentry)->i_ino);
 }