Updated a couple of tests for sync-by-ref and array-const PRs
Merge pull request #456 from vasslitvinov/followup_to__#420-syncvar__#451-arrayconst

Updated a couple of tests for sync-by-ref #451 and array-const #420

Overlooked them earlier - they had errors due to write(syncvar)
and assignment to const array elements. Fixed by adding readFF()
and changing the array to 'var', as in those PRs.