s3-smbcontrol: Replace && with || to declare variables in do_sleep()

s3-smbcontrol: Replace && with || to declare variables in do_sleep()

--enable-developer internally use --enable-selftest alongside. But when
configured only with --enable-selftest the following code block becomes
invalid:

 #if defined(DEVELOPER) && defined(ENABLE_SELFTEST)
        unsigned int seconds;
        long input;
        const long MAX_SLEEP = 60 * 60; /* One hour maximum sleep */
 #endif

making those variables undeclared for further use. Therefore replace &&
with || to have those variables declared with --enable-selftest
configure option.

Signed-off-by: Anoop C S <anoopcs@redhat.com>
Reviewed-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Fri May 31 20:38:09 UTC 2019 on sn-devel-184