Fix z_size_t definition:

Dead2 · Dead2 · commit 1382b88a14f4 · 2023-05-16T10:28:28.000+02:00
- Zlib Compat: Move definition of z_size_t to zconf.h, so it is exported to applications.
               Always defined as size_t to follow zlib 1.2.13 behavior with STDC compilers.
- Zlib-NG: Keeps internal definition of z_size_t in zbuild.h
diff --git a/zbuild.h b/zbuild.h
@@ -88,11 +88,6 @@
 #  define PREFIX3(x) z_ ## x
 #  define PREFIX4(x) x ## 64
 #  define zVersion zlibVersion
-#  if defined(_WIN64)
-#    define z_size_t unsigned __int64
-#  else
-#    define z_size_t unsigned long
-#  endif
 #else
 #  define PREFIX(x) zng_ ## x
 #  define PREFIX2(x) ZLIBNG_ ## x
diff --git a/zconf.h.in b/zconf.h.in
@@ -25,6 +25,8 @@
 #  define z_const
 #endif
 
+typedef size_t z_size_t;
+
 /* Maximum value for memLevel in deflateInit2 */
 #ifndef MAX_MEM_LEVEL
 #  define MAX_MEM_LEVEL 9
