linux-next: Signed-off-by missing for commits in the staging tree

[Stephen Rothwell]

Hi Greg,

Commits

  97c6166001ef ("Staging: rtlwifi: Remove unused variable and the code")
  357f862bd214 ("staging: comedi: adv_pci1760: fix typo in comments")
  23cb746b5e9d ("staging: rtl8192u: Replace mdelay with msleep in rtl8192_usb_probe")
  beac4303532f ("Staging: vt6656: Fix unnecessary 'out of memory' message")

are missing a Signed-off-by from their committer.

-- 
Cheers,
Stephen Rothwell