Don't put a space before ellipsis.

Before: template <class ... Ts> void Foo(Ts ... ts) { Foo(ts ...); }
After:  template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181182 91177308-0d34-0410-b5e6-96231b3b80d8