This can happen if the weather information of a package
is requested for an unsupported system. For example,
try "guix weather icecat --system=aarch64-linux".
* guix/scripts/weather.scm
(report-server-coverage): Do not divide by zero when zero
store items are requested from a server.
Fixes: <https://issues.guix.gnu.org/49263>
Reported-By: Jack Hill <jackhill@jackhill.us>
Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
