neatogen: convert 'Site.refcnt' to unsigned

This count is never intended to go negative. So using an unsigned type gives us
one more bit. Though reference counts of this object are not expected to reach
2³¹, so this is mostly just for clarity.

diff --git a/lib/neatogen/site.h b/lib/neatogen/site.h
index 2a9b0f19641df3c6b1d0e5c71c89279282dcbe25..3e54acb5c2a967cd73429dc52f09a67f9008a00b 100644 (file)
--- a/lib/neatogen/site.h
+++ b/lib/neatogen/site.h
@@ -22,7 +22,7 @@ extern "C" {
     typedef struct Site {
        Point coord;
        size_t sitenbr;
-       int refcnt;
+       unsigned refcnt;
     } Site;
 
     extern int siteidx;