Comment 2 for bug 775972

Hi

I've tried to correct the problem (a very minor change). Initially, any position above 89.5°N (or for anything below 89.5°S) was treated as having latitude 89.5° for the purpose of drawing the equatorial grid. This may be because the equatorial grid was obtained by transforming the altaz grid, and altaz coordinates are not defined on poles. But interestingly, stellarium makes an altaz grid for poles as well, and they can be thought of as a limit of latitude going to 90.0° along the specified longitude. So, the poles need not be treated as special and the same transformation matrix may be used on them as well. I hope I am correct. Please comment.

I have attached the patch file.