[WebAssembly] Fix build after rL355577
[WebAssembly] Fix build after rL355577

Turns own that IsUsedInRegularObject is set for lazy (archive) symbols.

Differential Revision: https://reviews.llvm.org/D59074

git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@355580 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld