fix: use after free and uninitialized memory (#1603)

* fix use after free and uninitialized memory

* add if check for packet lengths

* move purge down further

Its used in the if check too...

dGame/User.cpp

@@ -12,6 +12,7 @@ User::User(const SystemAddress& sysAddr, const std::string& username, const std:
 	m_AccountID = 0;
 	m_Username = "";
 	m_SessionKey = "";
+	m_MuteExpire = 0;
 
 	m_MaxGMLevel = eGameMasterLevel::CIVILIAN; //The max GM level this account can assign to it's characters
 	m_LastCharID = 0;