Merge branch 'myfixes' into 'next'

Fix visplanes getting allocated twice (backport from srb2kart)

See merge request !1636

src/r_plane.c

@@ -318,7 +318,7 @@ static visplane_t *new_visplane(unsigned hash)
 	visplane_t *check = freetail;
 	if (!check)
 	{
-		check = calloc(2, sizeof (*check));
+		check = malloc(sizeof (*check));
 		if (check == NULL) I_Error("%s: Out of memory", "new_visplane"); // FIXME: ugly
 	}
 	else