Merge pull request #6809 from yuyuyu101/wip-13985

msgr:  fix large message data content length causing overflow

Reviewed-by: Greg Farnum <gfarnum@redhat.com>

diff --cc src/msg/async/AsyncConnection.cc
Simple merge

diff --cc src/msg/async/AsyncConnection.h
Simple merge

diff --cc src/msg/simple/Pipe.cc
Simple merge

diff --cc src/msg/simple/Pipe.h
Simple merge