BUG/MEDIUM: ssl: error when no certificate are found

When a non-existing file was specified in the configuration, haproxy
does not exits with an error which is not normal.

This bug was introduced by dfa93be ("MEDIUM: ssl: emulate multi-cert
bundles loading in standard loading") which does nothing if the stat
failed.

This patch introduce a "found" variable which is checked at the end of
the function so we exit with an error if no find were found.

Must be backported to 2.3.
1 file changed