url_handlers: Use bool in delete_image()
url_handlers: Use bool in delete_image()

Seeing as we are compiling as C99, we can make use of the 'bool' type.

In delete_image() switch the headers_sent variable from an int to a
bool.

Signed-off-by: Andrew Clayton <02e0a999c50b1f88df7a8f5a04e1b76b35ea6a88@opentechlabs.co.uk>

ac000/receiptomatic