Fix for "playdemo" not working with custom home paths

This should fix https://mb.srb2.org/showthread.php?t=43205

EDIT: As a bonus I've gotten -playdemo and -timedemo to work again; however, the change involves may or may not be master-safe, so I'm merging this to next instead

mentioned in merge request !220 (closed)

Related to demos, -playdemo seems to be fixed on my system by:

+		COM_BufInsertText("wait 2\n");
		if (M_CheckParm("-playdemo"))
		{
			singledemo = true; // quit after one demo
			G_DeferedPlayDemo(tmp);
		}
		else
			G_TimeDemo(tmp);

added 1 commit

• f1b8e122 - Fix missing semicolon

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added 1 commit

• 0ef7aff5 - Prevent SV_SpawnPlayer from being able to freeze the game if gametic is 0.…

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Works as intended.

changed the description

changed target branch from master to next

Description updated and target branch changed to next

resolved all discussions

merged

mentioned in commit c42c70cb