Fix result computation in n_set_marks

* reclaim.c [!USE_MARK_BYTES] (GC_n_set_marks): Do not decrement the
result variable on return; add comment.

diff --git a/reclaim.c b/reclaim.c
index b8276ee174fa9bd39145aaf15602634570abe942..1b2268b3921aba7e1673a8df2ec1de29de31c20a 100644 (file)
--- a/reclaim.c
+++ b/reclaim.c
@@ -527,7 +527,7 @@ int GC_n_set_marks(hdr *hhdr)
 #   else
       result += set_bits(hhdr -> hb_marks[n_mark_words - 1]);
 #   endif
-    return(result - 1);
+    return result; /* the number of set bits excluding the one past the end */
 }
 
 #endif /* !USE_MARK_BYTES  */