G_ExitLevel tweak: Use HU_ClearCEcho() instead of HU_DoCEcho(""), the latter causes an empty line to appear in log.txt

src/g_game.c

@@ -2633,7 +2633,7 @@ void G_ExitLevel(void)
 			CONS_Printf(M_GetText("The round has ended.\n"));
 
 		// Remove CEcho text on round end.
-		HU_DoCEcho("");
+		HU_ClearCEcho();
 	}
 }