Merge branch 'demototalplaytime' into 'next'

Don't increment totalplaytime if a demo is playing.

See merge request STJr/SRB2!241

src/p_tick.c

@@ -607,7 +607,8 @@ void P_Ticker(boolean run)
 	}
 
 	// Keep track of how long they've been playing!
-	totalplaytime++;
+	if (!demoplayback) // Don't increment if a demo is playing.
+		totalplaytime++;
 
 	if (!useNightsSS && G_IsSpecialStage(gamemap))
 		P_DoSpecialStageStuff();