https://bugs.archlinux.org/task/31324
https://410333.bugs.gentoo.org/attachment.cgi?id=322456

diff -ur src.old/compression/DecompressorGZIP.cpp src/compression/DecompressorGZIP.cpp
--- src.old/compression/DecompressorGZIP.cpp	2012-08-28 17:54:46.000000000 +0200
+++ src/compression/DecompressorGZIP.cpp	2012-08-28 17:55:21.000000000 +0200
@@ -57,11 +57,11 @@
 	
 bool DecompressorGZIP::decompress(const PPSystemString& outFileName, Hints hint)
 {
-    gzFile *gz_input_file = NULL;
+    gzFile gz_input_file = NULL;
 	int len = 0;
 	pp_uint8 *buf;
 	
-	if ((gz_input_file = (void **)gzopen (fileName.getStrBuffer(), "r")) == NULL)
+	if ((gz_input_file = gzopen (fileName.getStrBuffer(), "r")) == NULL)
 		return false;
 	
 	if ((buf = new pp_uint8[0x10000]) == NULL)