--- a/map.c	Wed May 03 21:28:48 2006 +0000
+++ b/map.c	Wed May 03 21:34:07 2006 +0000
@@ -40,7 +40,7 @@
 	_map_tile_mask = _map_size - 1;
 
 	free(_m);
-	_m = malloc(_map_size * sizeof(*_m));
+	_m = calloc(_map_size, sizeof(*_m));
 
 	// XXX TODO handle memory shortage more gracefully
 	if (_m == NULL) error("Failed to allocate memory for the map");