clang-format: Correctly format alias declarations.

Before:
  template <class CallbackClass>
  using MyCallback = void(CallbackClass::*)(SomeObject * Data);");

After:
  template <class CallbackClass>
  using MyCallback = void (CallbackClass::*)(SomeObject *Data);");

Also fix three wrong indentations.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188172 91177308-0d34-0410-b5e6-96231b3b80d8