Checking for null while converting to Dictionary

Need help in C# 5 replacing value with empty collection for the null ones

    

//Structure of the class Info
public class Info
{
     public IList<string> Type { get; set; }
     public IList<string> Flow { get; set; }
}

//Trying to convert the returned result into dictionary
db.InsertMissingInfo(result.Item1.ToDictionary(k => k.Key, v => new Info { Type = v.Value.Type, Flow = v.Value.Flow  }));

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Here result.Item1 is Tuple which i am converting in to dictionary
How can i check if the v.Value.Flow is null here if it is null i want to put an empty collection