Rename hb_apply_context_t to hb_ot_apply_context_t

src/hb-ot-shape-complex-arabic-fallback.hh

diff --git a/src/hb-ot-shape-complex-arabic-fallback.hh b/src/hb-ot-shape-complex-arabic-fallback.hh
index d98cde1..5a257f0 100644
--- a/src/hb-ot-shape-complex-arabic-fallback.hh
+++ b/src/hb-ot-shape-complex-arabic-fallback.hh
@@ -340,7 +340,7 @@
 			    hb_font_t *font,
 			    hb_buffer_t *buffer)
 {
-  OT::hb_apply_context_t c (0, font, buffer);
+  OT::hb_ot_apply_context_t c (0, font, buffer);
   for (unsigned int i = 0; i < fallback_plan->num_lookups; i++)
     if (fallback_plan->lookup_array[i]) {
       c.set_lookup_mask (fallback_plan->mask_array[i]);