--- zlib.cpp	2014-11-03 15:47:02.000000000 +0000
+++ zlib.cpp.new	2014-08-19 22:23:44.000000000 +0100
@@ -150,7 +150,11 @@
             (compress ? deflateEnd(s) : inflateEnd(s))
                 ;
     //);
-    crc_imp_ = 0;
+    if( compress ) {
+        crc_imp_ = 0;
+    } else {
+        crc_ = crc_imp_ = 0 ;
+    }
 }