[tier0] Fix a linux 64x vprof bug

Author: RaphaelIT7

public/tier0/vprof.h

@@ -545,7 +545,7 @@ class DBG_CLASS CVProfile
 	tchar *m_CounterNames[MAXCOUNTERS];
 	int m_NumCounters;
 
-	unsigned m_TargetThreadId;
+	ThreadId_t m_TargetThreadId;
 
 	StreamOut_t				m_pOutputStream;
 };