merge_trapezoids: [nfc] use a C99 bool instead of boolean

diff --git a/lib/ortho/trapezoid.c b/lib/ortho/trapezoid.c
index 252b1ffb6558626cf0c0900d9dd2c1ec36a45539..21638dce6868b55b287eb7ff0092370ae8ae35f0 100644 (file)
--- a/lib/ortho/trapezoid.c
+++ b/lib/ortho/trapezoid.c
@@ -348,7 +348,7 @@ merge_trapezoids (int segnum, int tfirst, int tlast, int side, trap_t* tr,
   while (t > 0 && _greater_than_equal_to(&tr[t].lo, &tr[tlast].lo))
     {
       int tnext, ptnext;
-      boolean cond;
+      bool cond;
       if (side == S_LEFT)
        cond = ((tnext = tr[t].d0) > 0 && tr[tnext].rseg == segnum) ||
                ((tnext = tr[t].d1) > 0 && tr[tnext].rseg == segnum);