Bugzilla bug #29908: make sure that md.write.thread or md.read.thread is nil when we return from SendReceiveStream so that we don't leave a dangling reference for the OT notifier routine.  This patch is submitted by Gordon Sheridon <gordon@netscape.com>.  r=wtc@netscape.com a=jar@netscape.com.
Bugzilla bug #29908: make sure that md.write.thread or md.read.thread is
nil when we return from SendReceiveStream so that we don't leave a
dangling reference for the OT notifier routine.  This patch is submitted
by Gordon Sheridon <gordon@netscape.com>.  r=wtc@netscape.com
a=jar@netscape.com.

makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub