Simplify. NFC.
Simplify. NFC.

 - Removed redundant `llvm::`
 - Typedef a long type name
 - Initialize members by member initializers

git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@344427 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld