Ensure fts3/4 prefix indexes are flushed to disk before an 'optimize' command. Fix for [745f1abc].
FossilOrigin-Name: 4ed905b18847d4dbf5a2570052abced338065f824137b90300f62d77b3159d80
D
dan committed
8b4d0e2cbad230860c724088bcdacaed000b2a99
Parent: 9613c9f