Fixed a compile error on use of deleted function...

Fixed a compile  error on  use of deleted function ¡®{anonymous}::MemberData::MemberData(const {anonymous}::MemberData&)

Summary:

There is compile error on https://lab.llvm.org/buildbot/#/builders/264/builds/1147/steps/5/logs/stdio
when commit in https://reviews.llvm.org/D144872