fix build

Author: nihui

opencv-2.4.13.7-no-zlib.patch

@@ -1,12 +1,31 @@
 diff -Nuarp opencv-2.4.13.7.orig/modules/core/src/persistence.cpp opencv-2.4.13.7/modules/core/src/persistence.cpp
 --- opencv-2.4.13.7.orig/modules/core/src/persistence.cpp	2018-07-02 05:41:56.000000000 +0800
-+++ opencv-2.4.13.7/modules/core/src/persistence.cpp	2021-02-24 23:58:32.154994276 +0800
-@@ -47,7 +47,7 @@
++++ opencv-2.4.13.7/modules/core/src/persistence.cpp	2021-02-25 00:07:23.031002590 +0800
+@@ -47,17 +47,7 @@
  #include <iterator>
  #include <wchar.h>
 
 -#define USE_ZLIB 1
+-
+-#ifdef __APPLE__
+-#  include "TargetConditionals.h"
+-#  if (defined TARGET_OS_IPHONE && TARGET_OS_IPHONE) || (defined TARGET_IPHONE_SIMULATOR && TARGET_IPHONE_SIMULATOR)
+-#    undef USE_ZLIB
+-#    define USE_ZLIB 0
+-     typedef void* gzFile;
+-#  endif
+-#endif
+-
 +#define USE_ZLIB 0
+ #if USE_ZLIB
+ #  ifndef _LFS64_LARGEFILE
+ #    define _LFS64_LARGEFILE 0
+@@ -66,6 +56,8 @@
+ #    define _FILE_OFFSET_BITS 0
+ #  endif
+ #  include <zlib.h>
++#else
++typedef void* gzFile;
+ #endif
 
- #ifdef __APPLE__
- #  include "TargetConditionals.h"
+ /****************************************************************************************\