bug#36649: 27.0.50; pure space and pdumper

[Robert Pluim]

>>>>> On Mon, 22 Jul 2019 03:58:29 +0000, Pip Cet <pipcet@gmail.com> said:

    Pip> On Sun, Jul 21, 2019 at 8:20 PM Robert Pluim <rpluim@gmail.com> wrote:
    Pip> Can you try again with this incremental patch?
    >> 
    >> I offer two alternatives, both of which build and run:

    Pip> Oops, sorry. I think the second alternative might break
    Pip> live_vector_holding, though?

OK. Hereʼs hoping no other code in emacs tries to create a 0-length
vector :-)

    Pip> Attaching an updated patch.

I put this on top of it. The result builds, runs, and is sending this
email.

diff --git i/src/image.c w/src/image.c
index 355c849491..b21dff34d4 100644
--- i/src/image.c
+++ w/src/image.c
@@ -4596,7 +4596,7 @@ xpm_make_color_table_h (void (**put_func) (Lisp_Object, 
const char *, int,
   *get_func = xpm_get_color_table_h;
   return make_hash_table (hashtest_equal, DEFAULT_HASH_SIZE,
                          DEFAULT_REHASH_SIZE, DEFAULT_REHASH_THRESHOLD,
-                         Qnil, false);
+                         Qnil);
 }
 
 static void