patch 8.1.1845: may use NULL pointer when running out of memory commit https://github.com/vim/vim/commit/6ace95e9810bdfef5392ad89efc9e4ad4606de28 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Aug 13 23:09:49 2019 +0200 patch 8.1.1845: may use NULL pointer when running out of memory Problem: May use NULL pointer when running out of memory. Solution: Do not clear popup buffers when NULL. (closes https://github.com/vim/vim/issues/4802)

TYPEMAP
VIWIN	T_VIOBJNOMUNGE
VIBUF	T_VIOBJNOMUNGE

INPUT
T_VIOBJNOMUNGE
	if (sv_isa($arg, \"${ntype}\")) {
	    IV tmp = SvIV((SV*)SvRV($arg));
	    $var = INT2PTR($type, tmp);
	    if (!tmp)
		croak(\"$ntype no longer exists\");
	}
	else
	    croak(\"$var is not of type ${ntype}\")