Fix missing in r230129:

kern_jail.c: initialize fullpath_disabled to zero
vfs_cache.c: add missing dot in comment

Reported by:	kib
MFC after:	1 month

sys/kern/kern_jail.c

@@ -881,6 +881,7 @@ kern_jail_set(struct thread *td, struct uio *optuio, int flags)
 	}
 #endif
 
+	fullpath_disabled = 0;
 	root = NULL;
 	error = vfs_getopt(opts, "path", (void **)&path, &len);
 	if (error == ENOENT)

sys/kern/vfs_cache.c

@@ -1291,7 +1291,7 @@ vn_commname(struct vnode *vp, char *buf, u_int buflen)
  * vnode is left locked and path remain untouched.
  *
  * If vp is a directory, the call to vn_fullpath_global() always succeeds
- * because it falls back to the ".." lookup if the namecache lookup fails
+ * because it falls back to the ".." lookup if the namecache lookup fails.
  */
 int
 vn_path_to_global_path(struct thread *td, struct vnode *vp, char *path,