fix(query): fix crash in printing log in stream due to dereference of invalid address

fix:wrong uasge of taosArrayGet

fix:return empty ssdatablock

address

fix: change  default valude

fix(qurey): fix som errors and add some logs.

fix: last cache invalid write

fix: should not set startFunc/stopFunc to 0. 

fix:incorrectly judged that the stream was killed

fix: should not set startFunc/stopFunc to 0. when the trans is not finished on taosd stop, it will cause the startFunc/stopFunc setting error