This was reported on irc on Fedora when rawhide went to 1.17.1.

regression occured in: 2566835b4374edb3e5a8353d4f7c9e7ec4851c57
 os: Eliminate uninitialized value warnings from access.c

siAddrMatch doesn't need addr to be a useful value, it checks
some things like localuser without having an address at all.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Tested-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

v2: backport to nx-libs 3.6.x (Ulrich Sibiller)