Make Sys_Milliseconds() inline

it only returns Sys_MillisecondsPrecise() casted to unsigned int anyway

neo/sys/sys_public.h

@@ -159,13 +159,15 @@ void			Sys_DebugVPrintf( const char *fmt, va_list arg );
 // NOTE: due to SDL_TIMESLICE this is very bad portability karma, and should be completely removed
 void			Sys_Sleep( int msec );
 
-// Sys_Milliseconds should only be used for profiling purposes,
-// any game related timing information should come from event timestamps
-unsigned int	Sys_Milliseconds( void );
-
 // like Sys_Milliseconds(), but with higher precision
 double			Sys_MillisecondsPrecise( void );
 
+// Sys_Milliseconds should only be used for profiling purposes,
+// any game related timing information should come from event timestamps
+ID_INLINE unsigned int Sys_Milliseconds( void ) {
+	return (unsigned int)Sys_MillisecondsPrecise();
+}
+
 // sleep until Sys_MillisecondsPrecise() returns >= targetTimeMS
 // aims for about 0.01ms precision (but might busy wait for the last 1.5ms or so)
 void Sys_SleepUntilPrecise( double targetTimeMS );

neo/sys/threads.cpp

@@ -68,15 +68,6 @@ void Sys_Sleep(int msec) {
 	SDL_Delay(msec);
 }
 
-/*
-================
-Sys_Milliseconds
-================
-*/
-unsigned int Sys_Milliseconds() {
-	return (unsigned int)Sys_MillisecondsPrecise();
-}
-
 /*
 ==================
 Sys_InitThreads