net: use transient I2P session for outbound if -i2pacceptincoming=0

If not accepting I2P connections, then do not create
`CConnman::m_i2p_sam_session`.

When opening a new outbound I2P connection either use
`CConnman::m_i2p_sam_session` like before or create a temporary one and
store it in `CNode` for destruction later.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/net.h b/src/net.h
index 0e4afe9fe0..7156a2259f 100644
--- a/src/net.h
+++ b/src/net.h
@@ -1090,7 +1090,8 @@ private:
 
     /**
      * I2P SAM session.
-     * Used to accept incoming and make outgoing I2P connections.
+     * Used to accept incoming and make outgoing I2P connections from a persistent
+     * address.
      */
     std::unique_ptr<i2p::sam::Session> m_i2p_sam_session;