URL links don't launch on Windows 7

[dbalsom]

I know this is likely low priority, if Windows 7 support is even desired, but launching URLs seems to fail on Windows 7.

Clicking on the menus in my help section produces:

"(X) https//github.com/dbalsom/martypc/wiki/{helpfilename}"
Application not found"

My help section is defined as so:

    "help": [
        {
            "type": "url",
            "label": "MartyPC Github",
            "url": "https://github.com/dbalsom/martypc"
        },
        {
            "type": "url",
            "label": "MartyPC User's Guide",
            "url": "https://github.com/dbalsom/martypc/wiki/MartyPC-User-Guide"
        },
        {
            "type": "url",
            "label": "ROM FAQ",
            "url": "https://github.com/dbalsom/martypc/wiki/ROMs"
        },
        {
            "type": "file",
            "label": "Open MartyPC Config File",
            "path": "./martypc.toml"
        }
    ]

[matyalatte]

Thanks for the report. I confirmed that this issue occurs when no default browser is set on Windows 7. Windows 11 can show a dialog to select a browser, but on Windows 7, you need to set it manually before opening URLs.