CLEANUP: stream: Remove useless tests on conn-stream in stream_dump()

Since the recent refactoring on the conn-streams, a stream has always a
defined frontend and backend conn-streams. Thus, in stream_dump(), there is
no reason to still test if these conn-streams are defined.

In addition, still in stream_dump(), get the stream-interfaces using the
conn-streams and not the opposite.

This patch should fix issue #1589 and #1590.
1 file changed