Fix gh-772 - NWaySelect late initialization causing crash
Fix gh-772 - NWaySelect late initialization causing crash

The member variable selectedInput was uninitialized until the activity
was started. If the input meta info was queried before the activity was
started, it would cause a crash

Signed-off-by: Jake Smith <b20121000db38205734e8ca1c74fe9668b08552a@lexisnexis.com>

afishbeck/HPCC-Platform,afishbeck/HPCC-Platform,afishbeck/HPCC-Platform,afishbeck/HPCC-Platform,afishbeck/HPCC-Platform,afishbeck/HPCC-Platform