Plug leaks

src/hb-ot-map-private.hh

@@ -120,6 +120,13 @@ struct hb_ot_map_t {
       hb_ot_layout_position_lookup (font, buffer, lookup_maps[1][i].index, lookup_maps[1][i].mask);
   }
 
+  inline void finish (void) {
+    feature_infos.finish ();
+    feature_maps.finish ();
+    lookup_maps[0].finish ();
+    lookup_maps[1].finish ();
+  }
+
   private:
 
   hb_mask_t global_mask;

src/hb-ot-shape-private.hh

@@ -51,6 +51,8 @@ struct hb_ot_shape_plan_t
 {
   hb_ot_map_t map;
   hb_ot_complex_shaper_t shaper;
+
+  inline void finish (void) { map.finish (); }
 };
 
 

src/hb-ot-shape.cc

@@ -381,6 +381,8 @@ hb_ot_shape (hb_font_t          *font,
 
   hb_ot_shape_plan_internal (&plan, font->face, &buffer->props, features, num_features);
   hb_ot_shape_execute (&plan, font, buffer, features, num_features);
+
+  plan.finish ();
 }
 
 

src/hb-private.hh

@@ -313,6 +313,14 @@ struct hb_prealloced_array_t {
   {
     return (const Type *) ::bsearch (key, array, len, sizeof (Type), (hb_compare_func_t) Type::cmp);
   }
+
+  inline void finish (void)
+  {
+    if (array != static_array)
+      free (array);
+    array = NULL;
+    allocated = len = 0;
+  }
 };
 
 template <typename Type>
@@ -394,7 +402,7 @@ struct hb_lockable_set_t
 	old.finish ();
 	l.lock ();
     }
-    items.shrink (0);
+    items.finish ();
     l.unlock ();
   }