extern variable declaration in a .c file is heresy - fixing it
diff --git a/include/unarchive.h b/include/unarchive.h
index 88c0088..843f68f 100644
--- a/include/unarchive.h
+++ b/include/unarchive.h
@@ -64,6 +64,11 @@
 
 } archive_handle_t;
 
+
+extern uint32_t gunzip_crc;
+extern off_t gunzip_bytes_out;
+
+
 extern archive_handle_t *init_handle(void);
 
 extern char filter_accept_all(archive_handle_t *archive_handle);