fix crash when undoing if there were no snapshots

The-Powder-Toy · Feb 19, 2017 · 61e19a3 · 61e19a3
1 parent 2967cde
commit 61e19a3
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/gui/game/GameController.cpp b/src/gui/game/GameController.cpp
@@ -233,6 +233,8 @@ GameController::~GameController()
 void GameController::HistoryRestore()
 {
 	std::deque<Snapshot*> history = gameModel->GetHistory();
+	if (!history.size())
+		return;
 	unsigned int historyPosition = gameModel->GetHistoryPosition();
 	unsigned int newHistoryPosition = std::max((int)historyPosition-1, 0);
 	// When undoing, save the current state as a final redo