bug#9175: [PATCH] 24.0.50: Images colors on NextStep do not default correctly

[Chong Yidong]

Alp Aker <alptekin.aker@gmail.com> writes:

> Image types that support :foreground and :background keywords in their
> image descriptors are supposed to default to the frame foreground and
> background colors when the relevant colors aren't specified.  On NS,
> however, these default to black.  An easy test case is provided by
> visiting a mono PBM image file (such as etc/images/splash.pbm) in
> image-mode; what one will see is simply a black square.
>
> Diagnostic: The image loading functions in image.c take the default
> colors from the frame's foreground_pixel and background_pixel fields,
> but on NS the relevant frame parameter handlers don't set those
> fields.  The following patch corrects that.

Thanks, applied.