FLTK initialization bug?

[Ben Abbott]

This looks like a timing problem to me.

        octave:1> backend ("fltk") ; __go_figure__ (1, "__backend__", "fltk")
        warning: implicit conversion from matrix to sq_string
        error: fltk_backend: could not recognize fltk index
        octave:1> backend ("fltk")
        octave:2> __go_figure__ (1, "__backend__", "fltk")
        ans =  1

... or ...

        octave:1> backend ("fltk") ; __go_figure__ (1, "__backend__", "fltk")
        warning: implicit conversion from matrix to sq_string
        error: fltk_backend: could not recognize fltk index
        octave:1> backend ("fltk") ; __go_figure__ (1, "__backend__", "fltk")
        ans =  1

I see the same result if the commands are placed on separate lines in a 
function.

Does anyone else see this?

Ben