Add a virtual destructor to a class with virtual methods.
Add a virtual destructor to a class with virtual methods.

Summary:
Recently, Clang enabled the check for virtual destructors
in the presence of virtual methods. That broke the bootstrap
build. Fixing it.

Reviewers: pcc

Reviewed By: pcc

Subscribers: llvm-commits, kubamracek

Differential Revision: https://reviews.llvm.org/D31776

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@299672 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt