vg_common_svg: Free node tree for memory leak after eet write.

Summary:
The node tree created from vg_common_svg_create_svg_node is not used after eet_data_write().
Therefore, to prevent memory leaks, free the node tree.

Test Plan: N/A

Reviewers: Hermet, smohanty, kimcinoo

Reviewed By: Hermet

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D10443

src/modules/evas/vg_savers/eet/evas_vg_save_eet.c

@@ -28,6 +28,8 @@ evas_vg_save_file_eet(Vg_File_Data *evg_data, const char *file, const char *key,
    eet_data_write(ef, svg_node_eet, key, root, compress);
    eet_close(ef);
 
+   vg_common_svg_node_free(root);
+
    return EVAS_LOAD_ERROR_NONE;
 }