# HG changeset patch
# User Neil <nyamatongwe@gmail.com>
# Date 1491548935 -36000
# Node ID 99e46ea84433f95e568fb9fdc7d4a92869e823ab
# Parent  df221375187cab18a3e1c73ae83fa46805bf98db
Check index before checking value at index.

diff -r df221375187c -r 99e46ea84433 src/CellBuffer.cxx
--- a/src/CellBuffer.cxx	Fri Apr 07 17:08:12 2017 +1000
+++ b/src/CellBuffer.cxx	Fri Apr 07 17:08:55 2017 +1000
@@ -348,12 +348,12 @@
 
 int UndoHistory::StartRedo() {
 	// Drop any leading startAction
-	if (actions[currentAction].at == startAction && currentAction < maxAction)
+	if (currentAction < maxAction && actions[currentAction].at == startAction)
 		currentAction++;
 
 	// Count the steps in this action
 	int act = currentAction;
-	while (actions[act].at != startAction && act < maxAction) {
+	while (act < maxAction && actions[act].at != startAction) {
 		act++;
 	}
 	return act - currentAction;