Zend/zend_sort: include cleanup

Add missing #include lines to the header, so it can always be included
without figuring out its header dependencies.

Author: MaxKellermann

Zend/zend_sort.c

@@ -17,9 +17,7 @@
    +----------------------------------------------------------------------+
 */
 
-#include "zend.h"
 #include "zend_sort.h"
-#include <limits.h>
 
 static inline void zend_sort_2(void *a, void *b, compare_func_t cmp, swap_func_t swp) /* {{{ */ {
 	if (cmp(a, b) > 0) {

Zend/zend_sort.h

@@ -20,6 +20,9 @@
 #ifndef ZEND_SORT_H
 #define ZEND_SORT_H
 
+#include "zend_portability.h" // for BEGIN_EXTERN_C
+#include "zend_types.h" // for compare_func_t, swap_func_t
+
 BEGIN_EXTERN_C()
 ZEND_API void zend_sort(void *base, size_t nmemb, size_t siz, compare_func_t cmp, swap_func_t swp);
 ZEND_API void zend_insert_sort(void *base, size_t nmemb, size_t siz, compare_func_t cmp, swap_func_t swp);