Fix time functions not starting from zero

src/i_time.c

@@ -43,18 +43,20 @@ tic_t I_GetTime(void)
 
 void I_InitializeTime(void)
 {
-	g_time.time = 0;
-	g_time.timefrac = 0;
-
-	enterprecise = 0;
-	oldenterprecise = 0;
-	tictimer = 0.0;
-
 	CV_RegisterVar(&cv_timescale);
 
 	// I_StartupTimer is preserved for potential subsystems that need to setup
 	// timing information for I_GetPreciseTime and sleeping
 	I_StartupTimer();
+
+	g_time.time = 0;
+	g_time.timefrac = 0;
+
+	enterprecise = I_GetPreciseTime();
+	oldenterprecise = enterprecise;
+	entertic = 0;
+	oldentertics = 0;
+	tictimer = 0.0;
 }
 
 void I_UpdateTime(fixed_t timescale)