Fix condition with empty body

Found by clang's warnings.

(cherry picked from commit 18796a2eb6c05706c6635453b3e425955aab93f4)

ticket: 7591
version_fixed: 1.11.2
status: resolved
Fix import_sec_context with interposers

The code was correctly selecting the mechanism to execute, but it was
improperly setting the mechanism type of the internal context when the
selected mechanism was that of an interposer and vice versa.

When an interposer is involved the internal context is that of the
interposer, so the mechanism type of the context needs to be the
interposer oid.  Conversely, when an interposer re-enters gssapi and
presents a token with a special oid, the mechanism called is the real
mechanism, and the context returned is a real mechanism context.  In
this case the mechanism type of the context needs to be that of the
real mechanism.

(cherry picked from commit 36c76aa3c625afc9291b9e1df071db51ccf37dab)

ticket: 7592
version_fixed: 1.11.2
status: resolved
Export verto_set_flags from libverto

When the bundled libverto was updated from 0.2.2 to 0.2.5,
verto_set_flags should have been added to libverto.exports along with
the other new functions.

(cherry picked from commit fb92e73d12081d36b0497e55489293d296eb416d)

ticket: 7594
version_fixed: 1.11.2
status: resolved