bug#7908: png-1.5 fix for emacs-23.2 and HEAD

[Chong Yidong]

Eli Zaretskii <eliz@gnu.org> writes:

> With this patch, image.c doesn't compile:
>
>   image.c: In function `png_load':
>   image.c:5866: error: invalid type argument of `unary *'

Hmm, interesting.  That line compiles fine on GNU/Linux.  Could you
double check if you used the second (corrected) patch I sent?  Line 5866
should read

  if (setjmp (PNG_JMPBUF (png_ptr)))