nss_db: protect against empty mappings

[Carlos O'Donell]

On 6/18/19 2:12 AM, Florian Weimer wrote:>> +  system ("/usr/bin/makedb -o /var/db/passwd.db /var/db/passwd.in")
> I think you need to use the actual installation path, not /usr/bin.

Correct, you need support_bindir_prefix[].

The /var/db is not configurable, so it can remain static.

-- 
Cheers,
Carlos.