memory leak in PM message envelope handling

the threaded message handling code has memory leaks. Using --disable-mempool (available in 994fbc58) will make it easier to locate these, as the memory pool hides them by simply growing without bound.

assigned to @haus1

created merge request !52 (merged) to address this issue

mentioned in merge request !52 (merged)

closed with merge request !52 (merged)

reopened

This code is widely changed. I do not see envelopes leaked on the PM side. We can close this one.

closed