XviD: fix build with C23

In C23, bool is a built-in keyword. Guard the typedef int bool; in
encoder.h so it is only used with older C standards.

Author: herbygillot

multimedia/XviD/Portfile

@@ -38,7 +38,8 @@ patchfiles          configure-CFLAGS.patch \
                     configure-dynlib.patch \
                     configure-flat_namespace.patch \
                     configure-SO_LINK.patch \
-                    Makefile-verbose.patch
+                    Makefile-verbose.patch \
+                    encoder-bool-c23.patch
 
 use_autoreconf      yes
 

multimedia/XviD/files/encoder-bool-c23.patch

@@ -0,0 +1,13 @@
+Guard typedef for bool against C23, where bool is a built-in keyword.
+--- ../../src/encoder.h.orig	2014-04-29 07:05:36.000000000 -0700
++++ ../../src/encoder.h	2014-04-29 07:05:36.000000000 -0700
+@@ -42,7 +42,9 @@
+  * Types
+  ****************************************************************************/
+
++#if !defined(__cplusplus) && (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 202311L)
+ typedef int bool;
++#endif
+
+ /*****************************************************************************
+  * Structures