Fix a -Wpessimizing-move warning from Clang on this code -- a std::move() isn't needed here as the object is a temporary.
Fix a -Wpessimizing-move warning from Clang on this code --
a std::move() isn't needed here as the object is a temporary.

git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@311430 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld