proc_fill_cache(): kill pointless check

we'd just checked that child->d_inode is non-NULL, for fuck sake!
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/proc/base.c

@@ -1710,10 +1710,8 @@ bool proc_fill_cache(struct file *file, struct dir_context *ctx,
 	if (!child || IS_ERR(child) || !child->d_inode)
 		goto end_instantiate;
 	inode = child->d_inode;
-	if (inode) {
 	ino = inode->i_ino;
 	type = inode->i_mode >> 12;
-	}
 	dput(child);
 end_instantiate:
 	if (!ino)