Index: draw_composite.c
===================================================================
--- draw_composite.c	(revision 19855)
+++ draw_composite.c	(revision 19856)
@@ -192,6 +192,7 @@
 	pcb_layergrp_t *g;
 	comp_ctx_t cctx;
 
+	memset(&info, 0, sizeof(info));
 	info.pcb = pcb;
 	info.drawn_area = screen;