Revert "Fix Clang -Wmissing-override warning"

This reverts commit r237975. This seems also to break with gcc 4.7

llvm-svn: 238004
diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
index d4a680d..796a69c 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
@@ -26,17 +26,18 @@
 
 namespace {
 
-class LoadedMachOObjectInfo
-    : public RuntimeDyld::LoadedObjectInfoHelper<LoadedMachOObjectInfo> {
+class LoadedMachOObjectInfo : public RuntimeDyld::LoadedObjectInfo {
 public:
   LoadedMachOObjectInfo(RuntimeDyldImpl &RTDyld, unsigned BeginIdx,
                         unsigned EndIdx)
-      : LoadedObjectInfoHelper(RTDyld, BeginIdx, EndIdx) {}
+    : RuntimeDyld::LoadedObjectInfo(RTDyld, BeginIdx, EndIdx) {}
 
   OwningBinary<ObjectFile>
   getObjectForDebug(const ObjectFile &Obj) const override {
     return OwningBinary<ObjectFile>();
   }
+
+  RuntimeDyld::LoadedObjectInfo *clone() const { return new LoadedMachOObjectInfo(*this); }
 };
 
 }