canvas vector: fix incorrect caching hit.

animated vector(lottie) caches current playing resource data,
for resuing if it's possible, but it must take care of the drawing size.

Previous logic missed that part, fixed it.

src/lib/evas/vg/evas_vg_cache.c

@@ -473,9 +473,13 @@ evas_cache_vg_tree_get(Vg_Cache_Entry *vg_entry, unsigned int frame_num)
    //No need to update.
    if (vfd->anim_data)
      {
-        if (vg_entry->root &&
-            vfd->anim_data->frame_num == frame_num)
-          return vg_entry->root;
+        if ((vg_entry->w == vfd->view_box.w) &&
+            (vg_entry->h == vfd->view_box.h))
+          {
+             if (vg_entry->root &&
+                 vfd->anim_data->frame_num == frame_num)
+               return vg_entry->root;
+          }
      }
    else
      {