Don't treat the string table index specially. NFC.
Don't treat the string table index specially. NFC.

We assign the string table section an index like every other section, we can
use it from there.

git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@247051 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld