Reliability fixes for nickname valid-checks on client and server

Author: Dutchman101

Client/core/CConnectManager.cpp

@@ -450,6 +450,8 @@ bool CConnectManager::CheckNickProvided(const char* szNick)
         return false;
     if (stricmp(szNick, "server") == 0)
         return false;
+    if (strchr(szNick, '`') != nullptr)
+        return false;
     return true;
 }
 

Server/mods/deathmatch/logic/packets/CPlayerJoinDataPacket.cpp

@@ -21,7 +21,8 @@ bool CPlayerJoinDataPacket::Read(NetBitStreamInterface& BitStream)
     if (!BitStream.Read(m_usBitStreamVersion))
         return false;
 
-    BitStream.ReadString(m_strPlayerVersion);
+    if (!BitStream.ReadString(m_strPlayerVersion))
+        return false;
 
     m_bOptionalUpdateInfoRequired = BitStream.ReadBit();