$OpenBSD: patch-source_fitz_z-imp_h,v 1.1 2020/06/13 15:53:36 sthen Exp $

cope with old zlib

Index: source/fitz/z-imp.h
--- source/fitz/z-imp.h.orig
+++ source/fitz/z-imp.h
@@ -1,6 +1,7 @@
 #ifndef FITZ_Z_IMP_H
 #define FITZ_Z_IMP_H
 
+#include <sys/limits.h>
 #include <zlib.h>
 
 void *fz_zlib_alloc(void *ctx, unsigned int items, unsigned int size);
