Use 'override/final' instead of 'virtual' for overridden methods

The patch is generated using clang-tidy misc-use-override check.

This command was used:

  tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py \
    -checks='-*,misc-use-override' -header-filter='llvm|clang' \
    -j=32 -fix -format

http://reviews.llvm.org/D8925



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234679 91177308-0d34-0410-b5e6-96231b3b80d8

lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h

@@ -100,7 +100,7 @@ class RuntimeDyldELF : public RuntimeDyldImpl {
 public:
   RuntimeDyldELF(RuntimeDyld::MemoryManager &MemMgr,
                  RuntimeDyld::SymbolResolver &Resolver);
-  virtual ~RuntimeDyldELF();
+  ~RuntimeDyldELF() override;
 
   std::unique_ptr<RuntimeDyld::LoadedObjectInfo>
   loadObject(const object::ObjectFile &O) override;