stream: don't call _read after destroy()
Partly fixes #29477 (closed).
Currently stream implementations MUST check for destroyed inside _read.
Found this while investigating a suspicious destroyed
conditional in fs streams.
"Full" fix in #29485 but it is way too breaking at this point and needs more updated tests.
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines