This prevents a segfault when an Include file does not exist.

diff -Naur acpica-unix2-20160930/source/compiler/aslfiles.c acpica-unix2-20160930-s390/source/compiler/aslfiles.c

--- acpica-unix2-20160930/source/compiler/aslfiles.c	2016-09-30 10:43:56.000000000 -0600

+++ acpica-unix2-20160930-s390/source/compiler/aslfiles.c	2016-12-06 18:55:08.693785207 -0700

@@ -319,7 +319,7 @@

     if (!IncludeFile)

     {

         fprintf (stderr, "Could not open include file %s\n", Pathname);

-        ACPI_FREE (Pathname);

+        /* ACPI_FREE (Pathname); <-- forces free() segfault */

         return (NULL);

     }