[subset] Remove not needed blob sanitize call

src/hb-subset-cff1.cc

@@ -922,13 +922,9 @@ _hb_subset_cff1 (const OT::cff1::accelerator_subset_t  &acc,
 bool
 hb_subset_cff1 (hb_subset_context_t *c)
 {
-  hb_blob_t *cff_blob = hb_sanitize_context_t().reference_table<CFF::cff1> (c->plan->source);
-
   OT::cff1::accelerator_subset_t acc;
   acc.init (c->plan->source);
-  bool result = likely (acc.is_valid ()) &&
+  bool result = likely (acc.is_valid ()) && _hb_subset_cff1 (acc, c);
-			_hb_subset_cff1 (acc, c);
-  hb_blob_destroy (cff_blob);
   acc.fini ();
 
   return result;

src/hb-subset-cff2.cc

@@ -478,14 +478,9 @@ _hb_subset_cff2 (const OT::cff2::accelerator_subset_t  &acc,
 bool
 hb_subset_cff2 (hb_subset_context_t *c)
 {
-  hb_blob_t *cff2_blob = hb_sanitize_context_t().reference_table<CFF::cff2> (c->plan->source);
-
   OT::cff2::accelerator_subset_t acc;
   acc.init (c->plan->source);
-  bool result = likely (acc.is_valid ()) &&
+  bool result = likely (acc.is_valid ()) && _hb_subset_cff2 (acc, c);
-		_hb_subset_cff2 (acc, c);
-
-  hb_blob_destroy (cff2_blob);
   acc.fini ();
 
   return result;