Python compat - iterator protocol

In Python2 next() is used wile it's __next__ in Python3.

Differential Revision: https://reviews.llvm.org/D56250

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350326 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed