If we use DW_AT_ranges we need to specify a base address that ranges
are relative to in the compile unit. Currently let's just use 0...

Thanks to Greg Clayton for the catch!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200425 91177308-0d34-0410-b5e6-96231b3b80d8