From: gregorycu <gregory.currie@gmail.com>
Date: Sun, 3 Jan 2016 07:25:09 +0000 (+1100)
Subject: Prevent technically unsafe access with empty vector
X-Git-Tag: 0.4.14~346
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=87dcee6ac2058bbf5264ea7f82874bba67277252;p=oweals%2Fminetest.git

Prevent technically unsafe access with empty vector
---

diff --git a/src/network/networkpacket.cpp b/src/network/networkpacket.cpp
index b5e451cdb..2b308f334 100644
--- a/src/network/networkpacket.cpp
+++ b/src/network/networkpacket.cpp
@@ -77,6 +77,9 @@ void NetworkPacket::putRawString(const char* src, u32 len)
 		m_data.resize(m_datasize);
 	}
 
+	if (m_datasize == 0)
+		return;
+
 	memcpy(&m_data[m_read_offset], src, len);
 	m_read_offset += len;
 }