Code was attempting to determine the size of the file
before it was actually known and allocating insufficient
memory space. Images above a certain size caused a
segmentation fault. Moving the calloc() ensured ensured
that large images didn't result in a buffer overflow on
memcpy().
Signed-off-by: Michael T Farnworth <michael@turf.org>
[fixed name in From to match one in SoB]
Signed-off-by: Petr Štetiar <ynezz@true.cz>