init fails when ALIAE_CONFIG points to url

[harrhp]

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What happened?

#51 addded support for setting config via environment variable, but it works only for local files. When variable points to remote file initialization fails

my pwsh profile looks like this

$env:ALIAE_CONFIG = "https://...";
aliae init pwsh | Invoke-Expression

pwsh error

panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x18 pc=0x6d1b09]

goroutine 1 [running]:
github.com/jandedobbeleer/aliae/src/config.LoadConfig({0xc00011c0b2?, 0x4?})
        /home/runner/work/aliae/aliae/src/config/config.go:54 +0xe9
github.com/jandedobbeleer/aliae/src/core.Init({0xc00011c0b2, 0x0}, {0xc00011c090, 0x4}, 0x1)
        /home/runner/work/aliae/aliae/src/core/init.go:18 +0x9e
github.com/jandedobbeleer/aliae/src/cli.runInit({0xc00011c090?, 0x0?})
        /home/runner/work/aliae/aliae/src/cli/init.go:48 +0x39
github.com/jandedobbeleer/aliae/src/cli.glob..func2(0xc00016e100?, {0xc0001090b0?, 0x4?, 0x781f08?})
        /home/runner/work/aliae/aliae/src/cli/init.go:36 +0x2f
github.com/spf13/cobra.(*Command).execute(0xac6e60, {0xc000109050, 0x3, 0x3})
        /home/runner/go/pkg/mod/github.com/spf13/cobra@v1.8.0/command.go:987 +0xaa3
github.com/spf13/cobra.(*Command).ExecuteC(0xac7140)
        /home/runner/go/pkg/mod/github.com/spf13/cobra@v1.8.0/command.go:1115 +0x3ff
github.com/spf13/cobra.(*Command).Execute(...)
        /home/runner/go/pkg/mod/github.com/spf13/cobra@v1.8.0/command.go:1039
github.com/jandedobbeleer/aliae/src/cli.Execute({0x830ca0?, 0xc000088000?})
        /home/runner/work/aliae/aliae/src/cli/root.go:36 +0x49
main.main()
        /home/runner/work/aliae/aliae/src/main.go:10 +0x25
Invoke-Expression: Cannot bind argument to parameter 'Command' because it is an empty string.

What OS are you seeing the problem on?

Windows

Which shell are you using?

powershell