http2: fixes error handling
There should be no default error handling when using Http2Stream.
All errors will end up in 'streamError'
on the server anyway,
but they are emitted on 'stream'
as well, otherwise some error
conditions are impossible to debug.
See: https://github.com/nodejs/node/pull/14991
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
commit message follows commit guidelines