phia: merge phia_index_result() to phia_index_read()
phia: merge phia_index_result() to phia_index_read()

Prepare to remove scread.

Fix `struct svv` leak in case of OOM in phia_document_newv().

mejedi/tarantool,rtsisyk/tarantool,mejedi/tarantool,rtsisyk/tarantool,rtsisyk/tarantool,mejedi/tarantool,mejedi/tarantool,rtsisyk/tarantool