Adopt C99 bool in the tree234 API.

The only affected function here is splitpos234, which I don't think
these puzzles are even using at the moment.

1 files changed, 1 insertions, 1 deletions

diff --git a/tree234.c b/tree234.c
index 4b3151e..879096b 100644
--- a/tree234.c
+++ b/tree234.c
@@ -1376,7 +1376,7 @@ static node234 *split234_internal(tree234 *t, int index) {
     t->root = halves[1];
     return halves[0];
 }
-tree234 *splitpos234(tree234 *t, int index, int before) {
+tree234 *splitpos234(tree234 *t, int index, bool before) {
     tree234 *ret;
     node234 *n;
     int count;