Panic when window is closed and login required

[baznikin]

I am testing session expiring on new headscale/tailscale installation. I waited until my session expired, client disconnected and try to connect.

If app window is opened - no crash, dialog "Login required - Open browser to authenticate with Tailscale" pops up.
If app window is closed and connect via tray icon - app crashed, see backtrace below.

panic: runtime error: invalid memory address or nil pointer dereference [recovered]
	panic: closure error: unexpected panic caught: runtime error: invalid memory address or nil pointer dereference
	
	Closure added at:
		github.com/diamondburned/gotk4/pkg/glib/v2.IdleAdd at github.com/diamondburned/gotk4/[email protected]/glib/v2/glib.go:33679
		deedles.dev/trayscale/internal/ui.(*App).initTray at deedles.dev/trayscale/internal/ui/app.go:337
		deedles.dev/trayscale/internal/ui.(*App).initSettings.func2 at deedles.dev/trayscale/internal/ui/settings.go:42
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x19aba0a]

goroutine 1 [running, locked to thread]:
github.com/diamondburned/gotk4/pkg/core/closure.(*FuncStack).Panicf(0xc0004ca300, {0x1f45128, 0x1b}, {0xc000051778, 0x1, 0x1})
	github.com/diamondburned/gotk4/[email protected]/core/closure/funcstack.go:104 +0x908
github.com/diamondburned/gotk4/pkg/core/closure.(*FuncStack).TryRepanic(0xc0004ca300)
	github.com/diamondburned/gotk4/[email protected]/core/closure/funcstack.go:122 +0xbc
panic({0x1c3c160?, 0x3981ec0?})
	runtime/panic.go:785 +0x132
deedles.dev/trayscale/internal/ui.Confirmation.Show({{0x1f34281, 0xe}, {0x1f598de, 0x2e}, {0x1f331c3, 0xd}, {0x1f2cf8c, 0x7}}, 0x21b9e08?, 0xc00016c000)
	deedles.dev/trayscale/internal/ui/dialogs.go:16 +0x4a
deedles.dev/trayscale/internal/ui.(*App).startTS(0xc0000b86c0, {0x21be8d0, 0xc000320070})
	deedles.dev/trayscale/internal/ui/app.go:231 +0x210
deedles.dev/trayscale/internal/ui.(*App).initTray.func1()
	deedles.dev/trayscale/internal/ui/app.go:346 +0xa3
github.com/diamondburned/gotk4/pkg/core/glib._gotk4_sourceFunc(0x1021)
	github.com/diamondburned/gotk4/[email protected]/core/glib/glib.go:352 +0xd9
github.com/diamondburned/gotk4/pkg/gio/v2._Cfunc_g_application_run(0x5a5fed0, 0x1, 0x5cdbd50)
	_cgo_gotypes.go:14091 +0x4b
github.com/diamondburned/gotk4/pkg/gio/v2.(*Application).Run.func3(0x5a5fed0, 0x1, 0x5cdbd50)
	github.com/diamondburned/gotk4/[email protected]/gio/v2/gio.go:42200 +0x67
github.com/diamondburned/gotk4/pkg/gio/v2.(*Application).Run(0xc00022d140, {0xc0000360a0, 0x1, 0x1})
	github.com/diamondburned/gotk4/[email protected]/gio/v2/gio.go:42200 +0x1f1
deedles.dev/trayscale/internal/ui.(*App).Run(0xc0000b86c0, {0x21be9e8?, 0xc000265000?})
	deedles.dev/trayscale/internal/ui/app.go:411 +0x2df
main.main()
	deedles.dev/trayscale/cmd/trayscale/trayscale.go:49 +0xae