curl: Handle errors in curl_easy_perform()

Not much we can do, but at least warn the user that something went wrong.

Change-Id: I96374d1b153113a302fa98c27873db863a22f77e
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/c/em100/+/37479
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
1 file changed