coredump,journal: do not do ACL magic for processes of dynamic UIDs

Dynamic UIDs should be treated like system users in this regard.

src/coredump/coredump.c

@@ -165,7 +165,7 @@ static int fix_acl(int fd, uid_t uid) {
 
         assert(fd >= 0);
 
-        if (uid_is_system(uid))
+        if (uid_is_system(uid) || uid_is_dynamic(uid))
                 return 0;
 
         /* Make sure normal users can read (but not write or delete)

src/journal/journald-server.c

@@ -248,7 +248,7 @@ static void server_add_acls(JournalFile *f, uid_t uid) {
         assert(f);
 
 #if HAVE_ACL
-        if (uid_is_system(uid))
+        if (uid_is_system(uid) || uid_is_dynamic(uid))
                 return;
 
         r = add_acls_for_user(f->fd, uid);