Minor cleanup.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@205470 91177308-0d34-0410-b5e6-96231b3b80d8
Concatenate strings that are unnecessarily separated.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@205475 91177308-0d34-0410-b5e6-96231b3b80d8