From e0aafcaf7d02fc396ec31b6ae28db47c51d5ec0b Mon Sep 17 00:00:00 2001
From: Andrew James <ephphatha@thelettereph.com>
Date: Mon, 11 Oct 2021 20:02:45 +1100
Subject: [PATCH] Use correct pointer arithmetic in OnLevelData (#3094)

Previously was incrementing the pointer 5 places due to the way pointers to complete objects are handled.

see https://en.cppreference.com/w/cpp/language/operator_arithmetic#Additive_operators
---
 Source/msg.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/msg.cpp b/Source/msg.cpp
index 1e63e104e..b78fb4b71 100644
--- a/Source/msg.cpp
+++ b/Source/msg.cpp
@@ -366,7 +366,7 @@ DWORD OnLevelData(int pnum, const TCmd *pCmd)
 	}
 
 	assert(message.wOffset == sgdwRecvOffset);
-	memcpy(&sgRecvBuf[message.wOffset], &message + sizeof(message), message.wBytes);
+	memcpy(&sgRecvBuf[message.wOffset], &message + 1, message.wBytes);
 	sgdwRecvOffset += message.wBytes;
 	return message.wBytes + sizeof(message);
 }