Use malloc_default_zone to determine the size of pointers alloced in unexec

space instead of using possibly invalid emacs_zone pointers.  This fixes
the binary incompatibility problems caused by updates to libSystem.B

src/ChangeLog

+2002-11-24  Steven Tamm  <steventamm@mac.com>
+
+	* unexmacosx.c (unexec_realloc): Use malloc_default_zone to
+	determine the size of pointers alloced in unexed space instead
+	of using possibly invalid emacs_zone pointers.  This fixes the
+	binary incompatibility problems caused by updates to libSystem.B.
+
 2002-11-24  Richard M. Stallman  <rms@gnu.org>
 
 	* search.c (Fstring_match): Doc fix.

src/unexmacosx.c

@@ -888,7 +888,7 @@ unexec_realloc (void *old_ptr, size_t new_size)
 	/* 2002-04-15 T. Ikegami <ikegami@adam.uprr.pr>.  The original
 	   code to get size failed to reallocate read_buffer
 	   (lread.c).  */
-	int old_size = emacs_zone->size (emacs_zone, old_ptr);
+	int old_size = malloc_default_zone()->size (emacs_zone, old_ptr);
 	int size = new_size > old_size ? old_size : new_size;
 
 	if (size)