rdma-core-19.6:

Updates from version 19.5

• Backport fixes:
  • rstream.c: fix RESOURCE_LEAK issues
  • xsrq_pingpong.c: Fix RESOURCE_LEAK issue
  • srp_daemon: check return value of function 'umad_init'
  • Fix shiftTooManyBitsSigned issues
  • rcopy: fix UNUSED_VALUE
  • vmw_pvrdma: Avoid double unlock on qp->sq.lock
  • ibacm: Fix bug in acm_get_ep()
  • libhns: Avoid null pointer operation