C#7 Dictionary Scoping issues

#r "$NuGet\System.Net.Http\4.3.3\lib\net46\System.Net.Http.dll"
#r "$NuGet\System.Security.Cryptography.Algorithms\4.3.0\lib\net46\System.Security.Cryptography.Algorithms.dll"
#r "$NuGet\System.Security.Cryptography.Encoding\4.3.0\lib\net46\System.Security.Cryptography.Encoding.dll"
#r "$NuGet\System.Security.Cryptography.Primitives\4.3.0\lib\net46\System.Security.Cryptography.Primitives.dll"
#r "$NuGet\System.Security.Cryptography.X509Certificates\4.3.0\lib\net46\System.Security.Cryptography.X509Certificates.dll"

var dict = new Dictionary<string, IEnumerable<string>>
{
    ["token"] = new List<string> { "abc" }
};

if (dict?.TryGetValue("token", out var values) == true)
{
    Console.WriteLine(values.First());
}

// Produces unassigned local variable error, scoping issue?
{
    var errDict = new Dictionary<string, IEnumerable<string>>
    {
        ["token"] = new List<string> { "abc" }
    };

    if (errDict?.TryGetValue("token", out var tokens) == true)
    {
        Console.WriteLine(tokens.First());
    }
}