Reduce sys::Path usage in llvm-ar.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184315 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-ar/ArchiveReader.cpp b/tools/llvm-ar/ArchiveReader.cpp
index 8ad01dc..1271d02 100644
--- a/tools/llvm-ar/ArchiveReader.cpp
+++ b/tools/llvm-ar/ArchiveReader.cpp
@@ -174,7 +174,7 @@
 
   // Fill in fields of the ArchiveMember
   member->parent = this;
-  member->path.set(pathname);
+  member->path = pathname;
   member->info.fileSize = MemberSize;
   member->info.modTime.fromEpochTime(atoi(Hdr->date));
   unsigned int mode;