[Bf-blender-cvs] [1782376] master: Laplacian Deform Modifier: fix possible NULL pointer dereference.

[Campbell Barton]

Commit: 1782376d9786a7645372f21cc96baff1cea4716e
Author: Campbell Barton
Date:   Tue Dec 3 09:06:22 2013 +1100
http://developer.blender.org/rB1782376d9786a7645372f21cc96baff1cea4716e

Laplacian Deform Modifier: fix possible NULL pointer dereference.

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

M	source/blender/modifiers/intern/MOD_laplaciandeform.c

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

diff --git a/source/blender/modifiers/intern/MOD_laplaciandeform.c b/source/blender/modifiers/intern/MOD_laplaciandeform.c
index ec838c5..df64bf6 100644
--- a/source/blender/modifiers/intern/MOD_laplaciandeform.c
+++ b/source/blender/modifiers/intern/MOD_laplaciandeform.c
@@ -721,10 +721,13 @@ static void LaplacianDeformModifier_do(
 				MEM_SAFE_FREE(lmd->vertexco);
 				lmd->total_verts = 0;
 				deleteLaplacianSystem(sys);
+				lmd->cache_system = NULL;
 				initSystem(lmd, ob, dm, filevertexCos, numVerts);
 				sys = lmd->cache_system; /* may have been reallocated */
 				MEM_SAFE_FREE(filevertexCos);
-				laplacianDeformPreview(sys, vertexCos);
+				if (sys) {
+					laplacianDeformPreview(sys, vertexCos);
+				}
 			}
 			else {
 				if (sysdif == LAPDEFORM_SYSTEM_CHANGE_VERTEXES) {