Apply security patch to bundled zlib for CAN-2005-2096. (Bug #11844)

zlib/inftrees.c:
  Apply security patch for CAN-2005-2096

zlib/inftrees.c

@@ -134,7 +134,7 @@ unsigned short FAR *work;
         left -= count[len];
         if (left < 0) return -1;        /* over-subscribed */
     }
-    if (left > 0 && (type == CODES || (codes - count[0] != 1)))
+    if (left > 0 && (type == CODES || max != 1))
         return -1;                      /* incomplete set */
 
     /* generate offsets into symbol table for each length for sorting */