Fix memory leak caused by buffer capacity modification during read op…

…erations preventing successful allocator recycling.

Merge branch 'dev'

fix TestGetDieCh testcase

fix TestGetDieCh

upd

Merge branch 'rbqvq-dev'

remove 1 line of unreachable code

fix a bug that shaper channel is unbuffered

lower the freq to notify shaper

lower the freq to notify shaper to accept new writeRequests

use any to subsitute interface{}