File zlib.patch of Package freeimage

diff --git a/Source/ZLib/gzread.c b/Source/ZLib/gzread.c
index 956b91e..81872e7 100644
--- a/Source/ZLib/gzread.c
+++ b/Source/ZLib/gzread.c
@@ -5,6 +5,9 @@
 
 #include "gzguts.h"
 
+#include <stdio.h>
+#include <unistd.h>
+
 /* Local functions */
 local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *));
 local int gz_avail OF((gz_statep));