Issue found by the Coverity scanner.
HDG: Fixup don't free RGB24_line if it was not allocated by do_jpeg_encode
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
When using config.h, it must be the very first include in all source
files since it contains #define that may change the compilation process
(eg libc structure layout changes when it's used to enable large file
support on 32 bit x86 archs). This commit adds it at the beginning
of all .c and .cpp files
