Add missing calls to `free` for variable `buffer`.
This could lead to a memory leak.
Add missing call to `close` for file pointer `fdin`.
This could lead to a resource leak.
Signed-off-by: Andrea Dalla Costa <andrea@dallacosta.me>
This tool is used to create headers on images for the
D-Link DNS-313 in gemini target.
Will be used after switching gemini to 4.14 kernel.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>