From 743b492ac796b1c3048a611681e21e7040dc1c0c Mon Sep 17 00:00:00 2001
From: Strangerke <strangerke@scummvm.org>
Date: Mon, 7 Dec 2015 17:49:22 +0100
Subject: [PATCH] LAB: Add safeguards in unDiff()

---
 engines/lab/utils.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/engines/lab/utils.cpp b/engines/lab/utils.cpp
index 9e057f8a70a..6d4784d0acd 100644
--- a/engines/lab/utils.cpp
+++ b/engines/lab/utils.cpp
@@ -399,11 +399,15 @@ void Utils::unDiff(byte *newBuf, byte *oldBuf, byte *diffData, uint16 bytesPerRo
 			VUnDiffByteWord((uint16 *)newBuf, (uint16 *)diffData, bytesPerRow);
 		else if (bufType == 3)
 			VUnDiffByteLong((uint32 *)newBuf, (uint32 *)diffData, bytesPerRow);
+		else
+			error("Unexpected variable compression scheme %d", bufType);
 	} else {
 		if (bufType == 0)
 			unDiffByteByte(newBuf, diffData);
 		else if (bufType == 1)
 			unDiffByteWord((uint16 *)newBuf, (uint16 *)diffData);
+		else
+			error("Unexpected compression scheme %d", bufType);
 	}
 }