Function argument formatting fixes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185785 91177308-0d34-0410-b5e6-96231b3b80d8
Function argument formatting fixes. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185786 91177308-0d34-0410-b5e6-96231b3b80d8
Remove 'else' after 'return'

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185787 91177308-0d34-0410-b5e6-96231b3b80d8
Introduce a typedef for the type of NewlyDeducedPacks to avoid repeating the small size of the inner SmallVector.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185789 91177308-0d34-0410-b5e6-96231b3b80d8
Simplify code. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185792 91177308-0d34-0410-b5e6-96231b3b80d8