Revert due to specs: [truetype] Speed up variation IUP. This reverts commit 1e4496c54c010843c1bac56e5d344115d1a49620.
diff --git a/src/truetype/ttgxvar.c b/src/truetype/ttgxvar.c
index ea63a04..c064fd9 100644
--- a/src/truetype/ttgxvar.c
+++ b/src/truetype/ttgxvar.c
@@ -3472,9 +3472,8 @@
/* between `p1' and `p2', using `ref1' and `ref2' as the reference */
/* point indices. */
- /* modeled after `af_iup_interp', `_iup_worker_interpolate', and */
- /* `Ins_IUP' */
-
+ /* modeled after `af_iup_interp', `_iup_worker_interpolate', and */
+ /* `Ins_IUP' with spec differences in handling ill-defined cases. */
static void
tt_delta_interpolate( int p1,
int p2,