Fix cut and paste typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191914 91177308-0d34-0410-b5e6-96231b3b80d8
Make sure we emit a section for pubnames even if that section is
going to be empty. This is particularly important for the gnu
pubnames case since we're emitting a relocation to the section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191915 91177308-0d34-0410-b5e6-96231b3b80d8