clang-format: Fix bug in style option AlwaysBreakTemplateDeclarations.

Before:
  template <template <typename>
            class Fooooooo, template <typename>
            class Baaaaaaar>
  struct C {};

After:
  template <template <typename> class Fooooooo,
            template <typename> class Baaaaaaar>
  struct C {};

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190747 91177308-0d34-0410-b5e6-96231b3b80d8