Minor cleanups, no behavior change.

* Fixes a "return" that was indented at the same level as the continuation
  from the previous line
* Wrap several lines to 80 columns
* Remove an if check that was always true
* Move a variable declaration slightly closer to its use


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@207922 91177308-0d34-0410-b5e6-96231b3b80d8