Remove a layer of nesting in _poll_unconfirmed_resizes()

This simply changes the logic atop _poll_unconfirmed_resizes()
and de-indents everything that was nested underneath by four
spaces. It makes it much easier to work on without the useless
extra level of nesting.

Change-Id: I0d65fe2d1fc2649e0527ecbed1e6682b3da52b2b
Merge "Remove a layer of nesting in _poll_unconfirmed_resizes()"