From 79d0f9a45d36656051a77a7b0837aa0318f81ee5 Mon Sep 17 00:00:00 2001
From: Normand Briere <nbriere@noware.ca>
Date: Sun, 09 Jun 2019 11:23:18 -0400
Subject: [PATCH] Undo/redo

---
 LA.java |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/LA.java b/LA.java
index 904647a..154bebd 100644
--- a/LA.java
+++ b/LA.java
@@ -88,6 +88,9 @@
 
     static void vecCopy(cVector a, cVector b)
     {
+        Grafreed.Assert (a != null);
+        assert (b != null);
+        
         b.x = a.x;
         b.y = a.y;
         b.z = a.z;

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