Fill debug updates

Show final queue structure size at the end.
Watching the fill blit happen is now a separate #define'd option.

src/fill.c

@@ -60,6 +60,7 @@
 #define WIDE_MATCH_THRESHOLD 3
 
 // #define DEBUG
+// #define DEBUG_WATCH
 
 #define QUEUE_SIZE_CHUNK 1024
 
@@ -162,6 +163,10 @@ void cleanup_queue(void) {
   if (queue != NULL)
     free(queue);
 
+#ifdef DEBUG
+  printf("queue_size = %d\n\n", queue_size);
+#endif
+
   queue_size = 0;
   queue_start = 0;
   queue_end = 0;
@@ -308,7 +313,7 @@ void simulate_flood_fill_outside_check(int x, int y, int y_outside)
   if ((global_prog_anim % 800) == 1) /* Always lay sound _once_ */
     playsound(global_canvas, 1, SND_FILL, 1, x, SNDDIST_NEAR);
 
-#ifdef DEBUG
+#ifdef DEBUG_WATCH
   if (global_prog_anim % 100 == 0)
     {
       SDL_BlitSurface(global_canvas, NULL, global_screen, NULL);