Tweak array creation.
Tweak array creation.

This seems to yield minor improvements when deserializing arrays.

Before:

fromBuffer      |       toBuffer        |       isValid         |       (ops/sec)
---------:      |       -------:        |       ------:         |       ---------
1,458,470       |       651,995         |       43,892,939      |       ArrayString.avsc
283,344         |       256,197         |       1,576,349       |       Cake.avsc
1,004,572       |       567,457         |       1,335,504       |       HistoryItem.avsc
107,411         |       113,278         |       565,878         |       PciEvent.avsc
557,089         |       366,152         |       962,064         |       User.avsc

After:

fromBuffer      |       toBuffer        |       isValid         |       (ops/sec)
---------:      |       -------:        |       ------:         |       ---------
1,518,039       |       609,970         |       35,689,721      |       ArrayString.avsc
301,347         |       257,314         |       1,904,228       |       Cake.avsc
1,026,627       |       660,871         |       1,287,850       |       HistoryItem.avsc
113,960         |       117,291         |       590,675         |       PciEvent.avsc
592,435         |       433,807         |       999,077         |       User.avsc

N3da/avsc,cdapio/ui-schema-parser,mtth/avsc,mtth/avsc,cdapio/ui-schema-parser,mtth/avsc,mtth/avsc,N3da/avsc,mtth/avsc,N3da/avsc,N3da/avsc,cdapio/ui-schema-parser,cdapio/ui-schema-parser,N3da/avsc,cdapio/ui-schema-parser