Fix incorrect recognition of bin-packing.

Before (in Google style):
Constructor()
    : aaaaa(aaaaaa), aaaaa(aaaaaa), aaaaa(aaaaaa), aaaaa(aaaaaa), aaaaa(
          aaaaaa) {}

After:
Constructor()
    : aaaaa(aaaaaa),
      aaaaa(aaaaaa),
      aaaaa(aaaaaa),
      aaaaa(aaaaaa),
      aaaaa(aaaaaa) {}

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176242 91177308-0d34-0410-b5e6-96231b3b80d8