py312-ruamel-yaml-clib: fix incompatible function pointer types

*fixes package build on macOS Sequoia with clang16

Closes: https://trac.macports.org/ticket/70796

python/py-ruamel-yaml-clib/Portfile

@@ -9,7 +9,7 @@ version             0.2.8
 checksums           rmd160  58caef0372063cfa06e27a75fea1e85c43b1c891 \
                     sha256  beb2e0404003de9a4cab9753a8805a8fe9320ee6673136ed7f04255fe60bb512 \
                     size    213824
-revision            0
+revision            1
 
 license             MIT
 maintainers         {michaelld @michaelld} openmaintainer
@@ -26,6 +26,8 @@ if {${name} ne ${subport}} {
         port:py${python.version}-ruamel-yaml
 }
 
+patchfiles          clang16.patch
+
 # pypi requires "." not "-" in project names for fetching
 regsub ^py- [option name] "" python_rootname
 regsub -all {\-} ${python_rootname} "." python.rootname

python/py-ruamel-yaml-clib/files/clang16.patch

@@ -0,0 +1,33 @@
+Fix build with clang16
+https://cgit.freebsd.org/ports/plain/devel/py-ruamel.yaml.clib/files/patch-clang16
+--- _ruamel_yaml.c.orig	2023-10-03 06:54:38 UTC
++++ _ruamel_yaml.c
+@@ -2272,8 +2272,8 @@ static int __pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml_
+ static int __pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml_8CEmitter__serialize_node(struct __pyx_obj_6ruamel_4yaml_4clib_12_ruamel_yaml_CEmitter *__pyx_v_self, PyObject *__pyx_v_node, PyObject *__pyx_v_parent, PyObject *__pyx_v_index); /* proto*/
+
+ /* Module declarations from "ruamel.yaml.clib._ruamel_yaml" */
+-static int __pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml_input_handler(void *, char *, int, int *); /*proto*/
+-static int __pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml_output_handler(void *, char *, int); /*proto*/
++static int __pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml_input_handler(void *, unsigned char *, size_t, size_t *); /*proto*/
++static int __pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml_output_handler(void *, unsigned char *, size_t); /*proto*/
+ static PyObject *__pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml___pyx_unpickle_Mark__set_state(struct __pyx_obj_6ruamel_4yaml_4clib_12_ruamel_yaml_Mark *, PyObject *); /*proto*/
+ /* #### Code section: typeinfo ### */
+ /* #### Code section: before_global_var ### */
+@@ -16092,7 +16092,7 @@ static PyObject *__pyx_pf_6ruamel_4yaml_4clib_12_ruame
+  *     parser = <CParser>data
+  */
+
+-static int __pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml_input_handler(void *__pyx_v_data, char *__pyx_v_buffer, int __pyx_v_size, int *__pyx_v_read) {
++static int __pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml_input_handler(void *__pyx_v_data, unsigned char *__pyx_v_buffer, size_t __pyx_v_size, size_t *__pyx_v_read) {
+   struct __pyx_obj_6ruamel_4yaml_4clib_12_ruamel_yaml_CParser *__pyx_v_parser = 0;
+   PyObject *__pyx_v_value = NULL;
+   int __pyx_r;
+@@ -25321,7 +25321,7 @@ static PyObject *__pyx_pf_6ruamel_4yaml_4clib_12_ruame
+  *     emitter = <CEmitter>data
+  */
+
+-static int __pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml_output_handler(void *__pyx_v_data, char *__pyx_v_buffer, int __pyx_v_size) {
++static int __pyx_f_6ruamel_4yaml_4clib_12_ruamel_yaml_output_handler(void *__pyx_v_data, unsigned char *__pyx_v_buffer, size_t __pyx_v_size) {
+   struct __pyx_obj_6ruamel_4yaml_4clib_12_ruamel_yaml_CEmitter *__pyx_v_emitter = 0;
+   PyObject *__pyx_v_value = NULL;
+   int __pyx_r;