Fix compatibility whit rg_hint_message (#583)

When used reapi native rg_hint_message not work because tries to access to one pointer who not longer exists in CHintMessage::Send

Author: francoromaniello

regamedll/dlls/hintmessage.cpp

@@ -2,7 +2,7 @@
 
 CHintMessage::CHintMessage(const char *hintString, bool isHint, CUtlVector<const char *> *args, float duration)
 {
-	m_hintString = hintString;
+	m_hintString = CloneString(hintString);
 	m_duration = duration;
 	m_isHint = isHint;
 
@@ -16,6 +16,12 @@ CHintMessage::CHintMessage(const char *hintString, bool isHint, CUtlVector<const
 CHintMessage::~CHintMessage()
 {
 	m_args.PurgeAndDeleteArrays();
+
+	if (m_hintString)
+	{
+		delete[] m_hintString;
+		m_hintString = NULL;
+	}
 }
 
 void CHintMessage::Send(CBaseEntity *client)

regamedll/dlls/hintmessage.h

@@ -65,7 +65,7 @@ class CHintMessage
 	void Send(CBaseEntity *client);
 
 private:
-	const char *m_hintString;
+	char *m_hintString;
 	bool m_isHint;
 	CUtlVector<char *> m_args;
 	float m_duration;