* libptyssh/vt_pty_ssh.c: Add type casting from uintptr_t to HANDLE for #185

Job	Run time
build-freebsd (FreeBSD/amd64 14.2 with ports)	5m 13s
build-macos	1m 5s
build-msys2	5m 28s
build-linux (ubuntu:latest)	6m 35s
build-linux (ubuntu:22.04)	6m 12s
build-netbsd (NetBSD/amd64 10.1 with pkgsrc)	6m 17s
build-linux (debian:12)	6m 10s
build-linux (debian:11)	5m 54s
build-linux (archlinux:base)	6m 39s
	49m 33s

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