getsize should be FALSE by default

In the theme_imagefield_image, theme_imagefield_view_image, and theme_imagefield_view_preview functions, the default for $getsize is TRUE.

This can cause problems when the getimagesize() function fails for some reason. If getimagesize() fails, then no image tag is rendered. For example, I had a series of animated gifs that were breaking under getimagesize(), even though they would display fine in the browser.

I would suggest that the default behavior should be to fail-safe, and set $getsize = FALSE by default.

Alternatively, the default theming behavior could be better structured to handle errors from getimagesize(). I think both solutions have merit.