[Bf-blender-cvs] [4e1f310b8dd] blender2.8: Subdiv: Fix memory leak interpolating CD_MDISP

[Sergey Sharybin]

Commit: 4e1f310b8dd429145fd65922c9aa29a9ce47761f
Author: Sergey Sharybin
Date:   Wed Aug 15 11:28:00 2018 +0200
Branches: blender2.8
https://developer.blender.org/rB4e1f310b8dd429145fd65922c9aa29a9ce47761f

Subdiv: Fix memory leak interpolating CD_MDISP

Can not copy data without freeing the previous storage.

===================================================================

M	source/blender/blenkernel/intern/subdiv_mesh.c

===================================================================

diff --git a/source/blender/blenkernel/intern/subdiv_mesh.c b/source/blender/blenkernel/intern/subdiv_mesh.c
index 3bc39732118..30b933c1240 100644
--- a/source/blender/blenkernel/intern/subdiv_mesh.c
+++ b/source/blender/blenkernel/intern/subdiv_mesh.c
@@ -625,6 +625,7 @@ static void loop_interpolation_from_ptex(
 		LoopsOfPtex loops_of_ptex;
 		loops_of_ptex_get(ctx, &loops_of_ptex, coarse_poly, ptex_face_index);
 		/* Ptex face corner corresponds to a poly loop with same index. */
+		CustomData_free_elem(&loop_interpolation->loop_data_storage, 0, 1);
 		CustomData_copy_data(loop_data,
 		                     &loop_interpolation->loop_data_storage,
 		                     coarse_poly->loopstart + ptex_face_index,