Let's say we have two ifs that depend on each other:

if var exists {
    if var is array {
        //Do stuff with var
    } else {
        //Resolve the problem
    }
} else {
    //Resolve the problem in the exact same way as above
}
//Continue execution with the assumption that var is in the appropriate state

How can I refactor this to remove the duplicated code without using gotos or functions/methods?